| Teenage Mutant Ninja Turtles: Mutant Melee | fighting game | Konami |
| Domination | science fiction video game, turn-based tactics | Wargaming |
| Archlord | — | Codemasters, Naver Corporation |
| The White Chamber | — | Studio Trophis Production Company |
| Dynasty Warriors 5 | crowd-combat video game, hack and slash | Koei Tecmo Holdings |
| Project Snowblind | — | Crystal Dynamics |
| O2Jam | music video game | — |
| Nangoku Dominion | eroge, simulation video game, visual novel | Softhouse Chara |
| Hearts of Iron II | historical video game, real-time strategy, computer wargame, grand strategy wargame | Development Studio |
| Bakumatsu Renka Shinsengumi | adventure video game | — |
| Shimaima | eroge, visual novel | AliceSoft |
| Mega Man X8 | action game | Capcom |
| CSI: Crime Scene Investigation | adventure video game | Radical Entertainment |
| JBMod | physics game, first-person shooter | — |
| Dead to Rights | shoot 'em up | Torus Games |
| Yoimachi-hime: Taishō Inwai Kyūketsuki-tan | eroge, visual novel | — |
| Ojamajo Adventure: Naisho no Mahou | visual novel | Amada Printing |
| Half-Life: Source | first-person shooter | Valve Corporation |
| Bejeweled 2 | puzzle video game | — |
| Football Manager 2005 | — | Sports Interactive |
| Celljong | mahjong video game | Gen Muto |
| Green Green 2: Koi no Special Summer | eroge, visual novel | GROOVER |
| Mama Love | eroge, visual novel | — |
| Ty the Tasmanian Tiger 2: Bush Rescue | vehicular combat game, racing video game | Krome Studios |
| Tribes: Vengeance | first-person shooter | Irrational Games |
| Ricochet Lost Worlds: Recharged | Breakout clone | Reflexive Entertainment |
| The Moment of Silence | — | House of Tales |
| The Fairly OddParents: Shadow Showdown | — | ImaginEngine |
| Dofus | fantasy video game | Ankama |
| Nancy Drew: The Secret of Shadow Ranch | adventure video game | Her Interactive |
| Ikusa Otome Valkyrie "Anata ni Subete o Sasagemasu" | eroge, visual novel | — |
| Artificial Girl | eroge, life simulation game | Illusion |
| Starscape | — | Moonpod |
| Doko e Iku no, Ano Hi | eroge, visual novel | Moonstone |
| Memories Off: Sorekara | drama anime and manga, visual novel | — |
| The Chronicles of Riddick: Escape from Butcher Bay | first-person shooter, science fiction video game | Starbreeze Studios |
| Pure Pure Mimi to Shippo no Monogatari | eroge, visual novel | — |
| Shamana Shamana: Tsuki to Kokoro to Taiyō no Mahō | eroge, visual novel | Caramel Box |
| UEFA Euro 2004 | association football video game | EA Vancouver |
| CSI: Miami | adventure video game | Radical Entertainment, Gameloft |
| Trivial Pursuit: Unhinged | — | Artech Digital Entertainment |
| Breed | — | — |
| Remember 11: The Age of Infinity | science fiction video game, visual novel | — |
| Unreal Tournament 2004 | first-person shooter | Q739711 |
| Tom Clancy's Splinter Cell: Mission Pack | action game | Q188273 |
| Phoenix Wright: Ace Attorney – Trials and Tribulations | adventure video game, visual novel | Capcom |
| Snowy: The Bear's Adventures | platform game | Aliasworlds Entertainment |
| Yukiuta | — | — |