Region | Title | System | Version | Edition | Languages | Serial | Status |
| Pachitte Chonmage Tatsujin 14: Pachinko Kamen Rider: Shocker Zenmetsu Daisakusen パチってちょんまげ達人14 ~ぱちんこ仮面ライダー ショッカー全滅大作戦~ | PS2 | 1.01 | Original | | SLPS 25853 | |
| Pachitte Chonmage Tatsujin 13: Pachinko Hissatsu Shigotonin III ぱちんこ必殺仕事人III パチってちょんまげ達人13 | PS2 | 1.02 | Original | | SLPS 25828 | |
| Pachitte Chonmage Tatsujin 12: Pachinko Ultraman ぱちんこウルトラマン ぱちってちょんまげ達人12 | PS2 | 1.01 | Original | | SLPS 25776 | |
| Pachitte Chonmage Tatsujin 10: Pachinko Fuyu no Sonata ぱちんこ冬のソナタ ~パチってちょんまげ達人10~ | PS2 | 1.01 | Original | | SLPS 25665 | |
| Pachitte Chonmage 3: Kyoraku Kounin Gladiator & Tama-chan パチってちょんまげ3 ~京楽公認・グラディエーター&玉ちゃん~ | PSX | | Original | | SLPS 03422 | |
| Pachitte Chonmage 2: Kyoraku Kounin Tanukichi 2000 & Jungle P パチってちょんまげ2 ~京楽公認・タヌ吉2000&ジャングルP~ | PSX | | Original | | SLPS 02575 | |
| Pachio-kun FX: Maboroshi no Shima Daisakusen パチ夫君FX ~幻の島大決戦~ | PC-FX | | Original | | FXNHE508 | |
| Pachinko Teiou: CR Sore Ute Hama-chan 2 & CR Sore Yuke Matchan S パチンコ帝王 ~CRそれ打て浜ちゃん2・CRそれゆけ松ちゃんS~ | PSX | | Original | | SLPS 03254 | |
| Pachinko no Dendou: CR Nanasy パチンコの殿堂 CRナナシー | DC | 1.000 | Original | | T-5205M | |
| Pachinko Keoilokbou II 柏青哥俱樂部 II | PC | | Original | | | |
| Pachinko Kaou: Misora Hibari ぱちんこ華王 美空ひばり | PS2 | 1.02 | Original | | SLPS 25724 | |
| Pachinko Jikki Kouryaku Series: CR Daiku no Gen-san パチンコ実機攻略シリーズ CR大工の源さん | PC | | Original | | PDG-019-3 | |
| Pachinko Hissatsu Shigotonin IV: Kyoraku Collection Vol. 2 ぱちんこ 必殺仕事人Ⅳ KYORAKUコレクション Vol.2 | PS3 | 01.01 | Original | | BLJS 10192 | |
| Pachinko Hall: Shinsou Daikaiten パチンコ・ホール 新装大開店 | SS | 1.000 | Original | | T-37501G | |
| Pachinko Hall: Shinsou Daikaiten パチンコ・ホール 新装大開店 | PSX | | Original | | SLPS 01089 | |
| Pachinko Dream パチンコドリーム | PSX | | Original | | SLPM 86006 | |
| Pachinko de Asobou! Fever Dodeka Saurus パチンコで遊ぼう!~フィーバードデカザウルス~ | PS2 | 1.00 | Original | | SLPS 20186 | |
| Pachinko & Pachi-Slot: Parlor! Pro Extra: CR Inakappe Taishou A & Pachi-Slot Lupin Sansei パチンコ&パチスロ パーラー!プロ EX CR・いなかっぺ大将A&パチスロ・ルパン三世 | PSX | | Original | | SLPS 02860 | |
| Pachi-Slot Winning Post パチスロ ウイニングポスト | PS2 | 1.01 | Original | | SLPM 62620 | |
| Pachi-Slot Teiou: Yamasa Remix パチスロ帝王 ~山佐Remix~ | PSX | | Original | | SLPS 02905 | |
| Pachi-Slot Teiou: Shimauta-30, Twist, Nangoku Monogatari-30 パチスロ帝王 ~島唄-30・ツイスト・南国物語-30~ | PSX | | Original | | SLPS 03442 | |
| Pachi-Slot Teiou: Naniwa Sakura Fubuki パチスロ帝王 浪花桜吹雪 | PSX | | Original | | SLPS 03423 | |
| Pachi-Slot Teiou: Maker Suishou Manual Vol. 7: Trick Monster 2 パチスロ帝王 メーカー推奨マニュアル7 トリックモンスター2 | PSX | | Original | | SLPS 03391 | |
| Pachi-Slot Teiou: Maker Suishou Manual Vol. 5: Race Queen 2, Tomcat パチスロ帝王 メーカー推奨マニュアル5 ~レースクイーン2・トムキャット~ | PSX | | Original | | SLPS 03245 | |
| Pachi-Slot Teiou: Maker Suishou Manual Vol. 4: Exhaust, Ooedo Sakura Fubuki 2 パチスロ帝王 メーカー推奨マニュアル④ ~エキゾースト・大江戸桜吹雪2~ | PSX | | Original | | SLPS 03217 | |
| Las Pachi-Slot Teiou: Golgo 13 Vegas パチスロ帝王 ~ゴルゴ13・ラスベガス~ | PSX | | Original | | SLPS 03441 | |
| Pachi-Slot Teiou: Dream Slot: Olympia SP パチスロ帝王 ドリームスロット OLYMPIA SP | DC | 1.001 | Original | | T-20502M | |
| Pachi-Slot Teiou: Dream Slot: Heiwa SP パチスロ帝王 ドリームスロット HEIWA SP | DC | 1.001 | Original | | T-20501M | |
| Pachi-Slot Teiou: Dateline Pegasus パチスロ帝王 ~デートラインペガサス~ | PSX | | Original | | SLPS 03455 | |
| Pachi-Slot Teiou: Bunny Girl SP パチスロ帝王 ~バニーガールSP~ | PSX | | Original | | SLPS 03265 | |
| Pachi-Slot Teiou: Beat the Dragon 2 パチスロ帝王 ~ビート・ザ・ドラゴン2~ | PSX | | Original, Best of the Best | | SLPS 03029 … | |
| Pachi-Slot Teiou Mini: Dr. A7 パチスロ帝王 mini -Dr.A7- | PSX | | Original | | SLPS 02114 | |
| Pachi-Slot Teiou 7: Maker Suishou Manual Vol. 1: Beat the Dragon 2, Lupin Sansei, Hot Rod Queen パチスロ帝王7 メーカー推奨マニュアル① ~ビート・ザ・ドラゴン2・ルパン三世・ホッド・ロッド・クイーン~ | PSX | | Original | | SLPS 02991 | |
| Pachi-Slot Teiou 6: Kung-Fu Lady, BangBang, Prelude 2 パチスロ帝王6 ~カンフー・レディ・BANGBANG・プレリュード2~ | PSX | | Original | | SLPS 02657 | |
| Pachi-Slot Teiou 5: Kongdom, Super Star Dust 2, Flying Momonga パチスロ帝王5 ~コングダム・スーパースターダスト2・フライングモモンガ~ | PSX | | Original | | SLPS 02627 | |
| Pachi-Slot Teiou 5: Kongdom, Super Star Dust 2, Flying Momonga パチスロ帝王5 ~コングダム・スーパースターダスト2・フライングモモンガ~ | PSX | | Best of the Best | | SLPS 03149 | |
| Pachi-Slot Teiou 4: Oicho Kaba X, Magical Pops, LequiO-30 パチスロ帝王4 ~おいちょカバX・マジカルポップス・レキオ-30~ | PSX | | Best of the Best | | SLPS 02888 | |
| Pachi-Slot Teiou 4: Oicho Kaba X, Magical Pops, LequiO-30 パチスロ帝王4 ~おいちょカバX・マジカルポップス・レキオ-30~ | PSX | | Original | | SLPS 02564 | |
| Pachi-Slot Teiou 3: Sea Master X, Epsilon R, Wai Wai Pulsar 2 パチスロ帝王3 ~シーマスターX・イプシロンR・ワイワイパルサー2~ | PSX | | Original | | SLPS 02413 | |
| Pachi-Slot Teiou 2: Kagetsu, Two Pair, Beaver X パチスロ帝王2 ~花月・ツーペア・ビーバーX~ | PSX | | Original | | SLPS 02217 | |
| Pachi-Slot Nobunaga no Yabou: Tenka Sousei パチスロ 信長の野望 天下創世 | PS2 | 1.02 | Nobunaga no Yabou: Tenka Sousei: Pachi-Slot Set | | SLPM 62719 | |
| Pachi-Slot King! Kagaku Ninja-tai Gatchaman パチスロキング! 科学忍者隊ガッチャマン | PS2 | 1.02 | Original | | SLPS 20487 | |
| Pachi-Slot Kanzen Kouryaku: Takasago Super Project 2 パチスロ完全攻略~高砂スーパープロジェクトVOL.2~ | PSX | | Original | | SLPM 86962 | |
| Pachi-Slot Kanzen Kouryaku: Slot Genjin, Onihama Bakusou Gurentai: Gekitou-hen パチスロ完全攻略 スロ原人 鬼浜爆走愚連隊 激闘編 | PS2 | 1.01 | Original | | SLPM 62739 | |
| Pachi-Slot Kanzen Kouryaku: Gigazone: The Meteor Strike パチスロ完全攻略~ギガゾーン~ | PS2 | 1.00 | Original | | SLPM 62220 | |
| Pachi-Slot Higurashi no Naku Koro ni: Matsuri パチスロひぐらしのなく頃に 祭 | PS2 | 1.04 | Original | | SLPM 55211 | |
| Pachi-Slot Club Collection: Pachi-Slot da yo Koumon-chama パチスロ倶楽部コレクション パチスロだよ黄門ちゃま | PS2 | 1.02 | Original | | SLPS 20427 | |
| Pachi-Slot Club Collection: I'm Juggler EX: Juggler Selection パチスロ倶楽部コレクション アイムジャグラーEX ~ジャグラーセレクション~ | PS2 | 1.03 | Original | | SLPS 20490 | |
| Pachi-Slot Aruze Oukoku 4 パチスロ アルゼ王国4 | PSX | | Deluxe Pack | | SLPS 03088 | |
| Pachi-Slot Aruze Oukoku 4 パチスロ アルゼ王国4 | PSX | | PSone Books | | SLPS 91499 | |
| Pachi-Slot Aruze Oukoku 2 パチスロ アルゼ王国2 | PSX | | PSone Books | | SLPS 91493 | |
| Pachi-Slot Aruze Oukoku パチスロ アルゼ王国 | PSX | | Original | | SLPS 01968 | |
| Pachi-hime: Cutie Heroine Densetsu PACHI姫 ~キューティーヒロイン伝説~ | PC | | Original | | 4 988715 005830 | |
| Pachi Slot Teiou W: Arabesque R, Hot Rod Queen パチスロ帝王W アラベスクR・ホットロッドクイーン | PSX | | Original | | SLPS 02782 | |
| Pachi Para 17: Shinkai Monogatari with Agnes Lum パチパラ17 ~新海物語Withアグネス・ラム~ | PS3 | 01.02 | Original | | BLJS 10110 | |
| Pachi Para 16: Gingira Paradise 2 パチパラ16 ~ギンギラパラダイス2~ | PS3 | 01.02 | Original | | BLJS 10092 | |
| Pachi Para 15: Super Umi in Okinawa 2 パチパラ15 ~スーパー海IN沖縄2~ | PS3 | 01.03 | Original | | BLJS 10079 | |
| Pachi Para 14: Kaze to Kumo to Super Umi in Okinawa パチパラ14 ~風と雲とスーパー海IN沖縄~ | PS2 | 1.02 | Original | | SLPS 25787 | |
| Pachi Para 12: Ooumi to Natsu no Omoide パチパラ12 ~大海と夏の思い出~ | PS2 | 2.01 | Original | | SLPS 25574 | |
| Pachi Para 12: Ooumi to Natsu no Omoide パチパラ12 ~大海と夏の思い出~ | PS2 | 1.02 | Original | | SLPS 25574 | |
| Pachi Pachi Saga パチ・パチ・サーガ | PSX | | Original | | SLPS 00288 | |
| PacaPlusPlus パカプラスぷらす! | PC | | Original | | | |
| Paca Paca Passion Special パカ・パカ・パッション・スペシャル | PSX | | Original | | SLPS 03420 | |
| Paca Paca Passion 2 パカパカパッション2 | PSX | | Original | | SLPS 02720 | |
| Paca Paca Passion パカパカパッション | PSX | | Original | | SLPS 02122 | |
| Pac...man Mania: Breakout | PC | | Original | | CDR2015 | |
| Pac-Manía: Letras y Números | PC | 1.0 | Covermount | | | |
| Pac-Man: Adventures in Time パックマン アドベンチャー イン タイム | PC | 1.0 | Original | | 506-7228 | |
| Pac-Man World Rally | PSP | 1.02 | Original | | ULUS 10149 | |
| Pac-Man World Rally | PC | 1.0 | Original | | PART 40015 | |
| Pac-Man World Rally | GC | | Original | | DL-DOL-G89E-USA | |
| Pac-Man World 3 | PSP | 1.01 | Original | | ULUS-10055 | |
| Pac-Man World 3 | PC | 1.0 | Original | | 40007 | |
| Pac-Man World 3 | GC | | Original | | DL-DOL-GP8E-USA | |
| Pac-Man World 3 | XBOX | | Original | | NM-023 | |
| Pac-Man World 3 | PSP | 1.00 | Original | | ULES-00260 | |
| Pac-Man World 3 | GC | | Original | | DL-DOL-GP8P-NOE | |
| Pac-Man World 3 | PSP | 1.01 | Original | | UCAS 40081 | |
| Pac-Man World 20th Anniversary | PSX | | Original | | SCES-02280 | |
| Pac-Man World 20th Anniversary | PSX | | Original | | SCES-02278 | |
| Pac-Man World 20th Anniversary | PSX | | Original | | SCES-02277 | |
| Pac-Man World 2 | XBOX | | Platinum Hits | | NM-006 | |
| Pac-Man World 2 | PC | 1.0 | Rerelease | | | |
| Pac-Man World 2 | GC | | Original | | DL-DOL-GP2P-EUR | |
| Pac-Man World 2 | PC | | Original | | | |
| Pac-Man World 2 パックマンワールド2 | PS2 | 1.01 | Original | | SCPS 55038 | |
| Pac-Man Rally | PS2 | 1.00 | Original | | SLES-54584 | |
| Pac-Man Party パックマン パーティ | WII | | Original | | RVL-SP7J-JPN-B0 | |
| Pac-Man Party | WII | | Original | | RVL-SP7P-EUR-B0 | |
| Pac-Man Fever | PS2 | 1.10 | Original | | SLUS-20197 | |
| Pac-Man and the Ghostly Adventures 2 | XBOX360 | | Original | | NM-2154 | |
| Pac-Man and the Ghostly Adventures | XBOX360 | | Original | | NM-2149 | |
| Pac-Man All-Stars | PC | 1.0 | Pac-Man Three Pack | | Part # 23530CD | |
| Pac Games 2000 | PC | | Original | | CD 479 | |
| Paard & Pony: Topruiter | PS2 | 1.00 | Original | | SLES-55168 | |
| Paard & Pony: Mijn Paardenstal: Al Jouw Ruiterdromen Komen Uit! | WII | | Original | | RVL-RL2H-HOL | |
| Paard & Pony: In het Zadel | PC | | Original | | | |
| Pa Oppdagelsesferd med Peter og Marie: Bondegarden På Oppdagelsesferd med Peter og Marie: Bondegården | PC | | Original | | | |
| På Andra Sidan Häcken | PS2 | 1.00 | Platinum: The Best of PlayStation 2 | | SLES-54173 … | |
| P3P: Yeosin Jeonsaeng: Persona 3 Portable 여신전생 페르소나 3 PORTABLE | PSP | 1.00 | BigHits | | UCKS-45140 … | |
| P.T.O. IV: Pacific Theater of Operations P.T.O. IV | PS2 | 1.01 | Original | | SLES-52257 … | |
| P.D.: The Gate City ピーディー ザ・ゲート・シティ | PC | | Original | | | |
| P.A.W.S: Personal Automated Wagging System P.A.W.S: Symulator Psa | PC | | Covermount | | SELL 0071 | |
| P.A.W.S: Personal Automated Wagging System | CDI | | Original | | 811 9004 | |
| P-Zone (Disc 2) | PC | | Original | | | |
| P-Zone (Disc 1) | PC | | Original | | | |
| Ozawa-Ken+ | PC | | Original | | | |
| Oz no Mahoutsukai: Another World: Rung Rung オズの魔法使い ~Another World~ ルングルング | PSX | | Original | | SLPS 02335 | |
| Oyunlarla Dil Bilgisi Oyunlarla Matematik | PC | | Original | | | |
| Oynayarak Ogreniyorum 1 Oynayarak Öğreniyorum 1 | PC | | Original | | | |
| Oyako Entertainment Series: TV Kamishibai Vol. 1 親子エンタテインメントシリーズ ~てれび紙芝居Vol.1~ | PSX | | Original | | SLPM 86393 | |
| Oyako de Asobo: Miffy no Omochabako おやこ で あそぼ ミッフィーの おもちゃばこ | WII | | Original | | RVL-R3UJ-JPN-B0 | |
| Oyaji no Jikan: Nee-chan Tsuri Iku de! おやじの時間 ね~ちゃん釣り行くで! | PSX | | Original | | SLPS 02590 | |
| Oyaji no Jikan: Nee-chan Mahjong de Shoubu ya! おやじの時間 ~ねーちゃん麻雀で勝負や!~ | PSX | | Renkaban | | SLPS 03262 | |
| Oyaji no Jikan: Nee-chan Hanafuda de Shoubu ya! おやじの時間 ~ねーちゃん花札で勝負や!~ | PSX | | Original | | SLPS 02591 | |
| Oxyd Magnum! Gold Edition | PC | | Game-Pack 3 | | 80227 | |
| Oxide Oxyde | PC | | Dynamite | | DE-006 | |
| Owlboy (Game Disc) | PC | 0.0.6152.604 | IndieBox | | | |
| Overwatch | PC | | Origins Edition | | 052429 | |
| OverTop オーバートップ | NGCD | | Original | | ADCD-011 | |
| Overlord: Raising Hell | PC | 1.3 | Original | | MOVLRCDEU00 | |
| Overlord: Raising Hell | PS3 | 01.00 | Original | | BLES-00257 | |
| Overlord: Dark Legend | WII | | Original | | RVL-ROAE-USA | |
| Overlord: Dark Legend | WII | | Original | | RVL-ROAP-EUR | |
| Overlord II | PC | 1.0 | Original | | MOVL2CDUS00 | |
| Overlord II | PC | | Original | | | |
| Overlord II | PC | | Original | | MOVL2CDEU00 | |
| Overlord | XBOX360 | | Original | | CM-2005 | |
| Overlord | PC | 1.0 | Original | | MOVL1CDFC00 | |
| Overlord BGamer 153 (Side A) | PC | | Covermount | | | |
| Overlord | PC | 1.2 | Original | | MOVL1CDPL00 (DVD), POVL1CDPL03 (Box) | |
| Overlord | PC | | Original | | MOVL1CDEU00 | |
| OverKill | PC | | ROMWARE | | ROM 10 007 | |
| Overclocked: Una Storia di Violenza | PC | 1.1 | Original | | | |
| Overboard! | PC | | Dice | | DCG 005752, DMM 005776 | |
| OverBlood 2 (Disc 2) | PSX | Rev 1 | Original | | SLES-12187 … | |
| OverBlood 2 (Disc 2) | PSX | | Original | | SLES-11879 | |
| OverBlood 2 (Disc 1) | PSX | | Original | | SLES-01879 | |
| OverBlood オーバーブラッド | PSX | | Major Wave | | SLPM 86641 | |
| OverBlood | PSX | | Original | | SLES-00769 | |
| Over the Monochrome Rainbow featuring Shogo Hamada | PS2 | 1.40 | Original | | SLPM 65271 | |
| Over G: Energy Airforce | XBOX360 | | Original | | TI-2001 | |
| Over Drivin' IV オーバードライビンⅣ | PSX | | Original | | SLPS 02099 | |
| Over Drivin' III: Hot Pursuit オーバードライビンⅢ | PSX | | Original | | SLPS 01593 | |
| Over Drivin' II オーバードライビンⅡ | PSX | | Original | | SLPS 00895 | |
| Over 350 Solitaire Games | PC | | Original | | | |
| Over 350 Jigsaw Puzzles | PC | | Original | | 012163 | |
| Ovech'i bega Овечьи бега | PC | 1.0 | Original | | | |
| Outwars (Disc 2) | PC | 1.0 | Original | | 0298 Part No. X03-57509 | |
| Outwars (Disc 1) | PC | 1.0 | Original | | 0298 Part No. X03-63527 | |
| Outwars (Disc 2) | PC | 1.0 | Original | | 0398 Artikelnr. X00-14040 DE | |
| Outwars (Disc 1) | PC | 1.0 | Original | | 0398 Artikelnr. X00-14039 DE | |
| Outtrigger | DC | 1.003 | Original | | 51102 | |
| Outtrigger アウトトリガー | DC | 1.008 | Original | | HDR-0118 | |
| Outtrigger | DC | 1.001 | Original | | MK-51102-50 | |
| OutRun 2006: Coast 2 Coast (Disc 2) | PC | | Original | | | |
| OutRun 2006: Coast 2 Coast (Disc 1) | PC | | Original | | | |
| OutRun 2006: Coast 2 Coast | PSP | 1.03 | Original | | ULUS-10064 | |
| OutRun 2006: Coast 2 Coast | PC | | Top Games | | SEGA-PC029 | |
| OutRun 2006: Coast 2 Coast | PSP | 1.00 | Original | | ULKS 46087 | |
| OutRun 2006: Coast 2 Coast | PC | | GSP White Label: Reload | | 1673A | |
| OutRun 2006: Coast 2 Coast | PC | | White Label | | 1673A | |
| OutRun 2 | CHIHIRO | 2.000 | Original | | GDX-0004A | |
| OutRun 2 | XBOX | | Original | | SE-054 | |
| OutRun 2 アウトラン2 | XBOX | | Shokai Genteiban | | SE-054 | |
| OutRun 2 | XBOX | | Original | | SE-054 | |
| Outrage | PC | | Original | | | |
| Outpost 2: Divided Destiny | PC | 1.2.0.5 | Original | | | |
| Outpost 2: Divided Destiny | PC | 1.0 | Original | | S0011246 | |
| Outpost 2: Divided Destiny | PC | | SierraOriginals | | | |
| Outpost 2: Destini Sospesi | PC | 1.0 | Covermount | | | |
| Outpost | PC | 1.1 | Rerelease | | S725431 | |
| Outpost | PC | 1.51 | Schweinepreise | | S390122CZ12ZZ | |
| Outpost | PC | | SierraOriginals | | S4941220Z12Z2 | |
| Outpost | PC | | Original | | S 390121012ZZZ | |
| Outpost | PC | | Original | | S390021012ZZ2 | |
| Outlive | PC | 1.01 | Original | | | |
| Outlaws: Die Gesetzlosen (Disc 2) | PC | 1.1.1 | Original | | | |
| Outlaws: Die Gesetzlosen (Disc 1) | PC | 1.1.1 | Original | | | |
| Outlaws: Cidade Sem Lei (Disc 2) | PC | 2.0 | Original | | 0806.06.0 | |
| Outlaws: Cidade Sem Lei (Disc 1) | PC | 2.0 | Original | | 0806.05.0 | |
| Outlaws (Disc 2) | PC | 2.0 | Rerelease | | 9511831 | |
| Outlaws (Disc 2) | PC | 1.0 Build 3 | Bundle Version Diamond OEM | | 644431 | |
| Outlaws (Disc 1) | PC | 2.0 | Rerelease | | 9511830 | |
| Outlaws (Disco 1) | PC | 1.0 | LucasArts Classic | | 41175.101.IT | |
| Outlaws (Disco 2) | PC | 1.0 | LucasArts Classic | | 41175.102.IT | |
| Outlaws (Disc 2) | PC | 1.1 | Rerelease | | | |
| Outlaws (Disc 1) | PC | 1.1 | Rerelease | | | |
| Outlaws (Disc 2) | PC | 2.0 | Collection LucasArts | | | |
| Outlaws (Disc 1) | PC | 2.0 | Collection LucasArts | | | |
| Outlaw Volleyball: Red Hot | XBOX | | Original | | SS-003 | |
| Outlaw Volleyball | XBOX | | Original | | SS-003 | |
| Outlaw Volleyball 아웃로 발리볼 | XBOX | | Original | | SS-003 | |
| Outlaw Volleyball アウトローバレーボール | XBOX | | World Collection | | SS-003 | |
| Outlaw Volleyball | XBOX | | Original | | SS-007 | |
| Outlaw Tennis | XBOX | | Original | | TT-118 | |
| Outlaw Tennis | XBOX | | Original | | TT-118 | |
| Outlaw Racers | PC | | Sold Out Software | | | |
| Outlaw Golf: 9 More Holes of X-Mas | XBOX | | Original | | SS-006 | |
| Outlaw Golf: 9 Holes of X-Mas | XBOX | | Original | | VU-027 | |
| Outlaw Golf 2 | XBOX | | Original | | TT-023 | |
| Outlaw Golf | XBOX | | Original | | VU-016 | |
| Outlaw Golf | GC | | Original | | DL-DOL-GOFE-USA | |
| Outlaw Golf アウトローゴルフ | XBOX | | World Collection | | VU-016 | |
| Outlaw Golf | XBOX | | Original | | TM-006 | |
| Outlaw Golf | GC | | Original | | DL-DOL-GOFP-EUR-01 | |
| Outlaw Golf | XBOX | | Original | | TM-006 | |
| Outlaw Golf | PC | | Original | | RM-OUTGOLF-UK | |
| The Outforce | PC | 1.0.0.0 | Original | | | |
| The Outfit | XBOX360 | | Original | | TQ-2002 | |
| Outer World アウター・ワールド | 3DO | | Original | | FZ-SJ3451 | |
| Outer Ridge | PC | 1.0 | Original | | SPI004 | |
| Outdoor Wander Land アウトドアワンダーランド | MAC | | Original | | ILL-940715 | |
| Outdoor Action Double Pack Outdoor Action Double Pack: Remington Great American Bird Hunt and Shimano Xtreme Fishing | WII | | Original | | RVL-SFHE-USA-B0 | |
| Outcry (Disc 2) Outcry: The Dawn | PC | Version DPV 1.0 | Original | | PCO596CD | |
| Outcry (Disc 1) Outcry: The Dawn | PC | Version DPV 1.0 | Original | | PCO596CD | |
| Outcast (Disc 2) | PC | | Original | | 42831-9110TC | |
| Outcast (Disc 3) | PC | | Limitierte Sonderausgabe | | OUTCAPC520/A3 | |
| Outcast (Disc 2) | PC | | Limitierte Sonderausgabe | | OUTCAPC520/A2 | |
| Outcast (Disc 2) | PC | | Play the Games Vol. 3 | | | |
| Outcast (Disc 1) | PC | | Play the Games Vol. 3 | | | |
| Outcast (Disc 1) | PC | | Limitierte Sonderausgabe | | OUTCAPC520/A1 | |
| Outcast (Disc 1) | PC | | Original | | OUTCAPC52F/A1 | |
| Outburst | PC | | Classic Value Series | | Product# 99043 | |
| Outbreaker | PC | | Original | | | |
| Out of This World | PC | | Valueware | | CD-ICD-142-0 | |
| Out of This World | PC | | Rerelease | | CD-MMC-023-0 | |
| Out Live: Be Eliminate Yesterday アウトライブ Be Eliminate Yesterday | PSX | | Original | | SLPS 00746 | |
| Ousama Monogatari 王様物語 | WII | | Original | | RVL-RO3J-JPN-B0 | |
| Ousama Game (Disc 2) (Momo Disc) 王様げーむ | SS | 1.001 | Original | | T-21904G | |
| Ousama Game (Disc 1) (Ichigo Disc) 王様げーむ | SS | 1.001 | Original | | T-21904G | |
| Ouro e Glória: O Caminho para El Dorado | PC | | Original | | 906.02.0 | |
| Ouran Koukou Host Club 桜蘭高校ホスト部 | PS2 | 1.01 | Original | | SLPM 66738 | |
| Our Worst Fears: Die Blumen des Todes | PC | | Original | | | |
| Our House: Party! | WII | | Original | | RVL-SHPE-USA-B0 | |
| Our Graduation: Mahjong de Pon! Hanafuda de Koi! (Disc 2) (Hanafuda de Koi!) アワー グラデュエーション ~麻雀でポン 花札でコイ~ | PSX | | Original | | SLPS 02577 | |
| Our Graduation: Mahjong de Pon! Hanafuda de Koi! (Disc 1) (Mahjong de Pon!) アワー グラデュエーション ~麻雀でポン 花札でコイ~ | PSX | | Original | | SLPS 02576 | |
| Oumagatoki 2 逢魔が時2 | PSX | | Original | | SLPS 03272 | |
| Ouka: Kokoro Kagayakaseru Sakura 桜華 ~心輝かせる桜~ | PS2 | 1.01 | Original | | SLPM 66406 | |
| Ouka Houshin: Ouka Sakishi Toki 央華封神 ~央華咲きし刻~ | DC | 1.003 | Original | | T-38704M | |
| Oujisama Lv1.5: Oujisama no Tamago 王子さまLv1.5 ~王子さまのたまご~ | PSX | | Original | | SLPS 03534 | |
| Oujisama Lv1 王子さまLv1 | PSX | | Original | | SLPS 03412 | |
| Oujisama Lv1 王子さまLv1 | PC | | Original | | | |
| Ougon no Kizuna 黄金の絆 | WII | | Original | | RVL-RK7J-JPN | |
| Ougon Musou Kyoku X 黄金夢想曲X | XBOX360 | | Original | | AJ-2003 | |
| Ougon Kishi Garo 黄金騎士 牙狼 | PS2 | 1.01 | Genteiban | | SLPS 20462 | |
| Oudou Aniki 王道兄貴 | PC | 1.20b | Original | | | |
| Otverzhennye: Tajna temnoj rasy (Disc 2) Отверженные: Тайна темной расы | PC | | 1C: Igrushki | | SNOW OT21 0110 IR | |
| Otto's Ottifanten | PC | | Original | | | |
| Otousan no Tame no Tsuri: Fly Fishing-hen お父さんのための釣り フライ フィッシング編 | PC | | Original | | TFF-058-1 | |
| Otousan no Tame no Hanafuda Tenkomori お父さんのための花札 てんこもり | PC | | Original | | THT-063 | |
| Otostaz 오토스타츠 | PS2 | 1.01 | Original | | SCPS 56004 | |
| Otona no Gal-jong: Kimi ni Haneman! おとなのギャル雀 ~きみにハネ満!~ | PS2 | 1.03 | Jaleco the Best | | SLPM 62549 | |
| Otona no Gal-jong 2: Koishite Bai Man! おとなのギャル雀2 恋して倍満! | PS2 | 1.01 | Original | | SLPM 66194 | |
| Otona no Asobi おとなの遊び | PSX | | Nichibutsu Collection 2000 | | SLPS 02459 | |
| Otomedius Gorgeous! オトメディウス ゴージャス! | XBOX360 | | Original | | KN-2030 | |
| Otomedius Excellent! オトメディウスX(エクセレント!) | XBOX360 | | Original | | KN-2074 | |
| Otomedius Excellent | XBOX360 | | Original | | KN-2106 | |
| Otomedius (System Disc) オトメディウス | KEA | JAA | Original | | GGGJAA01 | |
| Otomedius (Application Disc 1) オトメディウス | KEA | JAA | Original | | GGGJAA02 | |
| Otomedius (Application Disc 2) オトメディウス | KEA | JAA | Original | | GGGJAA03 | |
| Otome-teki Koi Kakumei: Love Revo!! 乙女的恋革命★ラブレボ!! | PS2 | 1.03 | Love Revo Box | | SLPM 66237 | |
| Otome wa Oanesama Boku ni Koi Shiteru Portable 乙女はお姉さまに恋してる Portable | PSP | 1.02 | Original | | ULJM 05647 | |
| Otome wa Boku ni Koishiteru 乙女はお姉さまに恋してる | PS2 | 1.05 | Original | | SLPM 66165 | |
| Otome no Jijou 乙女の事情 | PS2 | 1.01 | Original | | SLPM 66508 | |
| Otogi: Myth of Demons | XBOX | | Original | | FS-002 | |
| Otogi 2: Immortal Warriors | XBOX | | Original | | FS-004 | |
| Otogi 2: Immortal Warriors | XBOX | | Original | | FS-004 | |
| Otogi 오토기 | XBOX | | Original | | YB-002 | |
| Othello CD-ROM | PC | | Original | | | |
| Othello | PC | | Original | | 99011 | |
| Othelanian Wars オセラニアン・ウォーズ | PC | | Original | | | |
| Otenki Kororin お天気ころりん | PSX | | Original | | SLPM 87047 | |
| Otchayannye domoxozyajki (Disc 3) (Igrovoj disk) Отчаянные домохозяйки | PC | | Original | | | |
| Otchayannye domoxozyajki (Disc 2) (Ustanovochnyj disk) Отчаянные домохозяйки | PC | | Original | | | |
| Otchayannye domoxozyajki (Disc 1) (Ustanovochnyj disk) Отчаянные домохозяйки | PC | | Original | | | |
| Ot zakata do rassveta От заката до рассвета | PC | | 1C: Igroteka | | | |
| Ostrov Nanda Остров Нанда | PC | 1.000 | Original | | | |
| Ostrov e'rotiki Остров эротики | PC | | Original | | | |
| Ostrich Runner | PC | | Microforum | | | |
| Osterspiele-Box Oster Spielebox | PC | | Original | | | |
| Ost-Indskaya kompaniya: Zolotoe izdanie Ост-Индская компания: Золотое издание | PC | | Original | | | |
| Osouji Sentai Clean Keeper H お掃除戦隊 くりーんきーぱーはいぱーH | PS2 | 1.01 | Original | | SLPM 55220 | |
| Osouji Sentai Clean Keeper お掃除戦隊くりーんきーぱー | WII | | Original | | RVL-RC5J-JPN | |
| Osobennosti nacional'nogo razvoda (Disc 2) Особенности национального развода | PC | | Original | | | |
| Osobennosti nacional'nogo razvoda (Disc 1) Особенности национального развода | PC | | Original | | | |
| Oshiete! Popotan おしえて! ぽぽたん | PS2 | 1.02 | Original | | SLPM 65535 | |
| Oscar Wilde's The Selfish Giant | PC | 2.10 | Original | | MQ 13-004-144 | |
| Oscar the Balloonist: Discovers the Farm 小小探險家奧斯卡 農場奇遇記 | PC | | Original | | | |
| Oscar der Ballonfahrer und die Geheimnisse des Waldes | PC | | | | | |
| Oscar | PC | | Golden Zone | | | |
| Osaka Naniwa Matenrou 大阪ナニワ摩天楼 | PSX | | Original | | SLPS 02013 | |
| Osaka Ennichi 大阪緣日 | PC | | Original | | OE-V1.00 | |
| Osada Avalona (Disc 2) Осада Авалона | PC | | | | | |
| Osada Avalona (Disc 1) Осада Авалона | PC | | | | | |
| Oro y Gloria: La Ruta hacia El Dorado | PSX | | Original | | SLES-03187 | |
| Oro Negro: Juego de Guerra y Estrategia | PC | | Covermount | | | |
| Oro e Gloria: La Strada per El Dorado | PC | | Covermount | | | |
| Orly Pervoj mirovoj Орлы Первой мировой | PC | 02.19.07 | Original | | | |
| The Orion Conspiracy | PC | 1.01 | Original | | | |
| Orion Burger | PC | | Original | | | |
| Orion Burger | PC | | Abenteuer Doppelpack: Premier Collection | | MOBRLPGE72 | |
| Original War (Disc 2) (GameDisc) オリジナル ウォー | PC | 1.02 | Original | | | |
| Original War (Disc 1) (Install Disc) オリジナル ウォー | PC | 1.02 | Original | | | |
| Original War (Disc 2) | PC | 1.02 | Covermount | | | |
| Original War (Disc 2) | PC | 1.02 | Original | | CD-W95-V006-IT2 | |
| Original War (Disc 1) | PC | 1.02 | Covermount | | | |
| Original War (Disc 1) | PC | 1.02 | Original | | CD-W95-V006-IT1 | |
| Original War (Disc 2) | PC | | Original | | | |
| Original War (Disc 1) | PC | | Original | | | |
| The Original Mulan 花木兰 | PC | | Original | | | |
| Orgazumi (Disc 2) オーガズミー | PC | | Original | | FCG014 | |
| Orgazumi (Disc 1) オーガズミー | PC | | Original | | FCG013 | |
| Oretachi no Sabage Portable 俺たちのサバゲー PORTABLE | PSP | 1.03 | Original | | ULJS 00170 | |
| Oretachi Geesen Zoku: Yie Ar Kung Fu オレたちゲーセン族 イー・アル・カンフー | PS2 | 1.01 | Original | | SLPM 62696 | |
| Oretachi Geesen Zoku: Trio the Punch オレたちゲーセン族 トリオ・ザ・パンチ | PS2 | 1.02 | Original | | SLPM 62745 | |
| Oretachi Geesen Zoku: Thunder Cross オレたちゲーセン族 サンダークロス | PS2 | 1.02 | Original | | SLPM 62744 | |
| Oretachi Geesen Zoku: Terra Cresta オレたちゲーセン族 テラクレスタ | PS2 | 1.04 | Original | | SLPM 62661 | |
| Oretachi Geesen Zoku: Sonic Wings オレたちゲーセン族 ~ソニックウィングス~ | PS2 | 1.01 | Original | | SLPM 62646 | |
| Oretachi Geesen Zoku: Scramble オレたちゲーセン族 スクランブル | PS2 | 1.01 | Original | | SLPM 62626 | |
| Oretachi Geesen Zoku: Rabio Lepus オレたちゲーセン族 ラビオ レプス | PS2 | 1.00 | Original | | SLPM 62707 | |
| Oretachi Geesen Zoku: Quarth オレたちゲーセン族 クォース | PS2 | 1.02 | Original | | SLPM 62704 | |
| Oretachi Geesen Zoku: Nekketsu Koukou Dodgeball-bu オレたちゲーセン族 熱血高校ドッジボール部 | PS2 | 1.00 | Original | | SLPM 62705 | |
| Oretachi Geesen Zoku: Moon Cresta オレたちゲーセン族 ムーンクレスタ | PS2 | 1.01 | Original | | SLPM 62645 | |
| Oretachi Geesen Zoku: Crazy Climber オレたちゲーセン族 クレイジー・クライマー | PS2 | 1.01 | Original | | SLPM 62627 | |
| Oretachi Geesen Zoku: Contra オレたちゲーセン族 魂斗羅 | PS2 | 1.00 | Original | | SLPM 62730 | |
| Oretachi Geesen Zoku: Burger Time オレたちゲーセン族 バーガータイム | PS2 | 1.00 | Original | | SLPM 62695 | |
| The Oregon Trail | PC | 3.0.1 | Slash | | CDRM1239790 | |
| The Oregon Trail | PC | 1.21 | | | | |
| The Oregon Trail | PC | 1.1 | Original | | #HCD606 | |
| Oregon Trail II + Logic Quest | PC | 1.2/1.0 | Original | | | |
| Oregon Trail II | PC | 1.3 | Smart Saver | | 0TT744AE-CD | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.0 | Scholastic | | 380859-CD WP2 | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.0 | Original | | 380859A-CD | |
| The Oregon Trail 4th Edition (Disc 3) | PC | 1 | Original | | OTF744AE-CD3 | |
| The Oregon Trail 4th Edition (Disc 2) | PC | 1 | Original | | OTF744AE-CD2 | |
| The Oregon Trail 4th Edition (Disc 1) | PC | 1 | Original | | OTF744AE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 3) | PC | 1.3 | The Learning Company | | OAE744BE-CD3 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 3) | PC | 1.2 | Original | | OTA744BE-CD3 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 3) | PC | | Original | | OTA744AE-CD3 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 2) | PC | 1.3 | The Learning Company | | OAE744BE-CD2 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 2) | PC | 1.2 | Original | | OTA744BE-CD2 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.3 | The Learning Company | | OAE744BE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.2a | Bundle Version Compaq Presario OEM | | | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.2 | Original | | OTA744CE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.2 | Rerelease | | OTA744BE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures | PC | 1.0 | DVD-ROM | | ORG811AE-DVD | |
| Ore no Yotto: Ganbare! Nippon Challenge 俺のヨット ~がんばれ! ニッポン・チャレンジ~ | PSX | | Original | | SLPS 02132 | |
| Ore no Yome: Anata dake no Hanayome 俺の嫁 ~あなただけの花嫁~ | XBOX360 | | Original | | IF-2008 | |
| Ore no Shita de Agake 俺の下であがけ | PC | System3.9 Ver.5.43 | Original | | ALB-005 | |
| Ore no Shita de Agake 俺の下で AGAKE | PS2 | 1.01 | Original | | SLPS 25796 | |
| Ore no Imouto ga Konnani Kawaii Wake ga Nai. Happy End 俺の妹がこんなに可愛いわけがない。 ハッピーエンド | PS3 | 01.01 | Original | | BLJS 10238 | |
| Ore ga Kantoku da! Volume 2: Gekitou Pennant Race オレが監督だ!Volume.2 ~激闘ペナントレース~ | PS2 | 1.04 | Original | | SLPM 65056 | |
| Order Up!! | PS3 | 01.02 | Original | | BLUS-30904 | |
| Order Up!! | PS3 | 01.04 | Original | | BLES-01470 | |
| Order Up! | WII | | Original | | RVL-ROXP-UKV | |
| Order Up! | WII | Rev 1 | Original | | RVL-ROXE-USA | |
| Order Up! | WII | | Original | | RVL-ROXE-USA | |
| Order Up! | WII | | Original | | RVL-ROXX-EUR | |
| Order of War: Stolknovenie Order of War: Столкновение | PC | | Igromaniya: Vybor redakcii | | | |
| Order of War: Osvobozhdenie Order of War: Освобождение | PC | | Igromaniya: Vybor redakcii | | | |
| Orda: Severnyj veter Орда: Северный ветер | PC | | Original | | | |
| Orbatak | 3DO | | Arcade CD-ROM | | | |
| Orange Pocket: Root オレンジポケット ~リュート~ | PS2 | 1.02 | Shokai Genteiban | | SLPM 65524 | |
| Orange Pocket: Root オレンジポケット ~リュート~ | PS2 | 1.02 | Original | | SLPM 65525 | |
| Orange Honey: Boku wa Kimi ni Koi shiteru オレンジ♥ハニー 僕はキミに恋してる | PS2 | 1.02 | Shokai Genteiban | | SLPS 25766 | |
| The Orange Box (Disc 2) 戰慄時空2:二部曲重裝旗艦版 | PC | | Original | | TTE0193 | |
| The Orange Box (Disc 1) 戰慄時空2:二部曲重裝旗艦版 | PC | | Original | | TTE0193 | |
| The Orange Box (Disc 2) | PC | | Original | | | |
| The Orange Box (Disc 2) | PC | | Rerelease | | | |
| The Orange Box (Disc 2) | PC | | Rerelease | | | |
| The Orange Box (Disc 1) | PC | | Original | | | |
| The Orange Box (Disc 1) | PC | | Rerelease | | | |
| The Orange Box (Disc 1) | PC | | Rerelease | | | |
| The Orange Box | XBOX360 | | Original | | EA-2063 | |
| The Orange Box (Disc 2) | PC | | Original | | VAD07705811D2 | |
| The Orange Box (Disc 1) | PC | | Original | | VAD07705811D | |
| The Orange Box | XBOX360 | | Original | | EA-2063 | |
| The Orange Box | PS3 | 01.00 | Original | | BLES-00172 | |
| Oracle no Houseki: Jewels of the Oracle オラクルの宝石 Jewels of the Oracle | PSX | | Original | | SLPS 00240 | |
| Option: Tuning Car Battle オプション チューニングカーバトル | PSX | Rev 1 | PlayStation the Best | | SLPS 91037 | |
| Opsys | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 4) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 3) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 2) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 1) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa | PS2 | 1.00 | Original | | SLES-53713 | |
| Opowieści z Narnii: Książe Kaspian | PC | | Covermount | | | |
| Opoona オプーナ | WII | | Original | | RVL-RPOJ-JPN | |
| Opoona | WII | | Original | | RVL-RPOP-EUR | |
| Operator's Side オペレーターズサイド | PS2 | 1.02 | Original | | SCPS 15039 | |
| The Operative: No One Lives Forever (Disc 2) (In the Lounge with No One Lives Forever) | PC | | Bundle Version Micro-Star International OEM | | CD-W581995-MSYZ2 | |
| The Operative: No One Lives Forever (Disc 1) (Game Disc) | MAC | 1.004 | MacPlay | | | |
| The Operative: No One Lives Forever (Disc 1) | PC | | Bundle Version Micro-Star International OEM | | CD-W581995-MSYZ1, FXX08903223D1 | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.004 | Game of the Year Edition | | S0025037 | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.0 | Original | | FXX08903223D2 | |
| The Operative: No One Lives Forever (Disc 1) | PC | 1.004 | Game of the Year Edition | | S0025036 | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.004 | Game of the Year Edition (Xplosiv) | | EI-1685-2 | |
| The Operative: No One Lives Forever (Disc 1) | PC | 1.004 | Game of the Year Edition (Xplosiv) | | EI-1685-1 | |
| The Operational Art of War: Century of Warfare | PC | | Original | | | |
| The Operational Art of War II: 1956-2000 The Operational Art of War II: Bewaffnete Konflikten | PC | | Original | | | |
| The Operational Art of War II | PC | 1.01.02 | Xplosiv | | EI-1259-3 | |
| Operation: Surgery Has Never Been so Silly! | PC | | Sold Out Software | | | |
| Operation: Surgery Has Never Been so Silly! | PC | | Replay Kids | | OPERPCREGB/A | |
| Operation Wolf オペレーション・ウルフ | FMT | 1.00 | Ving Vol. 3 | | HMB-126 | |
| Operation WinBack 2: Project Poseidon | XBOX | | Original | | KO-008 | |
| Operation Thunderstorm | PC | 1.0 | Original | | | |
| Operation Omega | PC | | Original | | 7-20286-92175-1 | |
| Operation Neptune | PC | 1.22 | Original | | ONT744CE-CD | |
| Operation Neptun | PC | 1.2 | Original | | ONT844AW-CD | |
| Operation Mittelmeer | PC | | Original | | | |
| Operation Flashpoint: Red River | PC | | Original | | MOFP3CDUS00 | |
| Operation Flashpoint: Red River | PC | | Kakaku Kaiteihan | | FBG028W000A10 | |
| Operation Flashpoint: Red River | XBOX360 | | Original | | CM-2104 | |
| Operation Flashpoint: Red River | PC | 1.0 | Original | | MOFP3CDEU00 | |
| Operation Flashpoint: Dragon Rising 오퍼레이션 플래시포인트: 드래곤 라이징 | PS3 | 01.01 | Original | | BLKS 20157 | |
| Operation Flashpoint: Dragon Rising | XBOX360 | | Original | | CM-2065 | |
| Operation Flashpoint: Dragon Rising | PC | | Original | | MOFP2CDEU00 | |
| Operation Flashpoint: Dragon Rising | PC | 1.0 | Original | | MOFP2CDEU00 | |
| Operation Flashpoint: Cold War Crisis | PC | 1.46 | Sold Out Software | | | |
| Operation Flashpoint: Cold War Crisis | PC | 1.46 | Sold Out Software | | | |
| Operation Flashpoint: Cold War Crisis | PC | 1.0 | Original | | MOPFCDEU00 | |
| Operation Europe: Path to Victory 1939-45 | PC | | Original | | | |
| Operation Darkness | XBOX360 | | Original | | AT-2002 | |
| Operation Darkness オペレーション・ダークネス | XBOX360 | | Original | | SU-2001 | |
| Operation Body Count | PC | | Original | | | |
| Operation Barbarossa: The Struggle for Russia | PC | | Original | | | |
| Operation | PC | | General Mills | | AM0703R71 | |
| Operation | PC | | General Mills | | | |
| Operaciya Silent Storm: Chasovye (Disc 2) Операция Silent Storm: Часовые | PC | | 1С: Igroteka | | | |
| Operaciya Silent Storm: Chasovye (Disc 1) Операция Silent Storm: Часовые | PC | | 1С: Igroteka | | | |
| Operaciya Silent Storm (Disc 2) Операция Silent Storm | PC | Aug 11 2003 | 1C: Igroteka | | | |
| Operaciya Silent Storm (Disc 1) Операция Silent Storm | PC | Aug 11 2003 | 1C: Igroteka | | | |
| Operaciya Bagration Операция Багратион | PC | | Original | | | |
| Operaciya "Plastilin" (Disc 2) Операция "Пластилин" | PC | | Original | | | |
| Operaciya "Plastilin" (Disc 1) Операция "Пластилин" | PC | | Original | | | |
| Opera Fatal | PC | | Tandem | | 1444 | |
| Opera Fatal | PC | | Original | | | |
| Open Season (Disc 3) | PC | 1.0 | Original | | 683131-CD3 | |
| Open Season (Disc 2) | PC | 1.0 | Original | | 683131-CD2 | |
| Open Season (Disc 1) | PC | 1.0 | Original | | 683131-CD1 | |
| Open Season | WII | | Original | | RVL-ROPE-USA | |
| Open Season | GC | | Original | | DL-DOL-GOSE-USA | |
| Open Season | XBOX | | Original | | US-097 | |
| Open Season (Disc 1) | PC | 1.00 | Original | | | |
| Open Season (Disc 3) | PC | | Original | | 5004905-CD 3 | |
| Open Season (Disc 2) | PC | | Original | | 5004905-CD 2 | |
| Open Season (Disc 1) | PC | | Original | | 5004905-CD 1 | |
| Open Season | XBOX | | Original | | US-097 | |
| Open Season | GC | | Original | | DL-DOL-GOSX-EUU | |
| Open Season | XBOX360 | | Original | | US-2024 | |
| Open Season | WII | | Original | | RVL-ROPP-EUR | |
| Oozora ni Kodawarou! Minna no Kuukou 2 大空にこだわろう! みんなの空港2 | PC | | | | | |
| Ooumi Nobunaga Den: Geten II 大海信長伝・下天II | PSX | | Original | | SLPS 00874 | |
| Oops! Prank Party | WII | Rev 1 | Original | | RVL-SPIE-USA-B0 | |
| Oookuki 大奥記 | PS2 | 1.02 | Original | | SLPM 66441 | |
| Ookami 大神 | WII | | Original | | RVL-ROWJ-JPN-B0 | |
| Oogami Ichirou Funtou-ki: Sakura Taisen Kayou Show "Beni Tokage" yori (Disc 2) 大神一郎奮闘記 ~サクラ大戦歌謡ショウ「紅蜥蜴」より~ | DC | 1.000 | Original | | HDR-0057 | |
| Oogami Ichirou Funtou-ki: Sakura Taisen Kayou Show "Beni Tokage" yori (Disc 1) 大神一郎奮闘記 ~サクラ大戦歌謡ショウ「紅蜥蜴」より~ | DC | 1.000 | Original | | HDR-0057 | |
| Ooga Booga | DC | 1.001 | Original | | 51140 | |
| Ooedo Senryoubako 大江戸千両箱 | PSP | 1.01 | Original | | ULJM 05099 | |
| De Ontdekker en het Mysterie van de Diamanten Scarabee The Explorer and the Mystery of the Diamond Scarab | WII | | Original | | RVL-SODP-EUR-B0 | |
| Onsen Ryokou Kakumei: Ich liebe dich.! 温泉旅行革命 ~Ich liebe dich.!~ | PC | 1.00 | Original | | RUCCA-003 | |
| Onsen de Takkyuu 温泉de卓球 | PC | | Original | | | |
| Onore no Shinzuru Michi o Yuke 己の信ずる道を征け | PSP | 1.01 | Original | | ULJM 05465 | |
| Onmyou Taisenki: Hasha no In 陰陽大戦記 ~覇者の印~ | PS2 | 1.03 | Original | | SLPS 25501 | |
| Onmyou Taisenki: Byakko Enbu 陰陽大戦記 白虎演舞 | PS2 | 1.01 | EyeToy Camera Doukonban | | SLPS 20416 | |
| Onmyou Taisenki: Byakko Enbu 陰陽大戦記 白虎演舞 | PS2 | 1.01 | Original | | SLPS 20417 | |
| Only You: Seikimatsu no Juliet-tachi Only You ~世紀末のジュリエットたち~ | FMT | | Shokai Gentei | | | |
| Only One 2: Naomi: Ai no Inori ga Todoku Toki オンリーワン2 なおみ 愛の祈りが届く時 | PC | 1.0.0.1 | Original | | ON2-NAO | |
| Only One 2: Bijin Casino Dealer Hitomi: Sei no Roulette オンリーワン2 美人カジノディーラー瞳 性のルーレット | PC | | Original | | ON2-HITO | |
| OnlineGamez | PC | | | | | |
| Online Chess Kingdoms | PSP | 1.02 | Original | | ULUS 10179 | |
| Online Chess Kingdoms | PSP | 1.02 | Original | | ULES-00570 | |
| Onkel Alberts geheimnisvolles Notizbuch | PC | | Original | | | |
| Onimusha: Warlords | PS2 | 1.00 | Original | | SLPM 67507 | |
| Onimusha: Put' samuraya (Disc 4) Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 3) Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 2) Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 1) (Igrovoj) Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraja Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha Buraiden 鬼武者 無頼伝 | PS2 | 1.02 | Original | | SLPM 65411 | |
| Onimusha 3: Demon Siege (Disc 3) | PC | | Original | | 683100-CD3 | |
| Onimusha 3: Demon Siege (Disc 2) | PC | | Original | | 683100-CD2 | |
| Onimusha 3: Demon Siege (Disc 1) | PC | | Original | | 683100-CD1 | |
| Onimusha 3 | PC | | Original | | 5004561 | |
| Onikiri-den 鬼斬伝 | PC | | Original | | ZEUS-00001 | |
| Onii-chan Jushin-chuu お兄ちゃん受信中 | PC | | Original | | | |
| Onigunsou Kuramochi Yuzo no Yatchimasu: Spartan Manshu 鬼軍曹倉持勇造の殺っちます ~スパルタン満州~ | PC | | Original | | | |
| Onible'jd Ониблэйд | PC | | Original | | | |
| The Oni Taiji!!: Mezase! Nidaime Momotarou The鬼退治!! 目指せ!二代目桃太郎 | PSX | | Original | | SLPS 00089 | |
| The Oni Taiji!!: Mezase! Nidaime Momotarou The鬼退治!! 目指せ!二代目桃太郎 | PSX | | Major Wave | | SLPM 86989 | |
| Oni no Kamen 鬼ノ仮面 | PC | 1.00 | Original | | | |
| Oni | MAC | | Original | | | |
| Oni | PC | 1.0 | PC Best Buy | | 177588 | |
| Oni | PC | 1.00.000 | Original | | MTW-0390 | |
| Oni | PC | 1.0 | Covermount | | | |
| Oni | PC | 1.0 | Covermount | | | |
| Oni | PS2 | 1.02 | Original | | SLES-50176 | |
| Oni | PC | 1.0 | Original | | | |