Hello everybody!
I've just checked out all Japan-only retail games for Dreamcast and made a list of playable without knowledge of Japanese. That is a good variant for guys who love to collect japanese licenced discs. Or maybe u r just up to something new on your favourite console.
BTW - Fan translated jap games are not included in this list, only games playable as them were released.
Aero Dancing F: Todoroki Tsubasa no Hatsu Hikou (Simulation)
Aero Dancing i (Simulation)
Aero Dancing i Jikai Saku Made Matemasen (Simulation)
Aero Dancing Todoroki Taichou no Himitsu Disc (Simulation)
BassRush Dream (Fishing)
Boko Yume no Tatsujin (Logic/Puzzle)
Boku no Tennis Jinsei (Tennis)
Bomber Hehhe (Logic/Puzzle)
Border Down (Shoot'em'up)
Capcom vs. SNK 2 (Fighting)
Cardcaptor Sakura: Tomoyo no Video Daisakusen (Logic/Puzzle)
Chaos Field (Shoot'em'up)
Cleopatra Fortune (Tetris)
Cool Cool Toon (Rhytm)
Cosmic Smash (Arcade)
Dance Dance Revolution 2nd Mix (Rhytm)
Dance Dance Revolution Club Version Dreamcast Version (Rhytm)
Doki Doki Idol Star Seeker Remix (Logic/Puzzle)
Get!! Colonies (Logic/Puzzle)
Giant Gram 2000: All Japan Pro Wrestling 3 (Fighting)
Giant Gram: All-Japan Pro Wrestling 2 (Fighting)
Godzilla Generations (Action)
Godzilla Generations: Maximum Impact (Action)
Golem no Maigo (Logic/Puzzle)
Golf Shiyouyo 2: Aratanaru Chousen (Golf)
Golf Shiyouyo Adventure Hen (Golf)
Golf Shiyouyo Kouryaku Pack (Golf)
Guilty Gear X (Fighting)
Hanagumi Taisen Columns 2 (Tetris)
Hello Kitty no Magical Block (Logic/Puzzle)
Hello Kitty no Waku Waku Cookies (Logic/Puzzle)
Hello Kitty no Lovely Fruit Park (Logic/Puzzle)
Ikaruga (Shoot'em'up)
Jissen Pachi-Slot Hisshouhou! @VPACHI: Kongdom (Casino)
Karous (Shoot'em'up)
Kidou Senshi Gundam: Renpou vs. Zeon DX (Action)
Lake Masters Pro Dreamcast plus! (Fishing)
Macross M3 (Action)
Musapey's Choco Marker (Logic/Puzzle)
Neo Golden Logres (Pinball)
Shin Nihon Pro Wrestling Toukon Retsuden 4 (Fighting)
O.to.i.Re: Dreamcast Sequencer (Music)
Panzer Front (Action)
Plus Plum (Tetris)
Pop 'n Music (Music)
Pop 'n Music 2 (Music)
Pop 'n Music 3 Append Disc (Music)
Pop 'n Music 4 Append Disc (Music)
Psyvariar 2: The Will to Fabricate (Shoot'em'up)
Puyo Puyo~n (Tetris)
Puyo Puyo Da! Featuring Ellena System (Rhytm)
Puyo Puyo Fever (Tetris)
Radirgy (Shoot'em'up)
Rainbow Cotton (Shoot'em'up)
Sega Tetris (Tetris)
Shanghai Dynasty (Shanghai Mahjong)
Shikigami no Shiro II (Shoot'em'up)
Shinseiki Evangelion: Typing E-Keikaku (Typing)
Soukou no Kihei: Space Griffon (FPS)
Space Channel 5: Part 2 (Rhytm)
Super Puzzle Fighter II X for Matching Service (Tetris)
Super Street Fighter II X for Matching Service (Fighting)
Tako no Marine (Puzzle)
Tetris 4D (Tetris)
The King of Fighters 2000 (Fighting)
The King of Fighters 2001 (Fighting)
The King of Fighters 2002 (Fighting)
Tokyo Bus Guide Bijin Bus Guide Tenjou Pack (Simulation)
Tokyo Bus Guide (Simulation)
Trigger Heart Exelica (Shoot'em'up)
Trizeal (Shoot'em'up)
Twinkle Star Sprites (Shoot'em'up)
Under Defeat (Shoot'em'up)
Vampire Chronicle for Matching Service (Fighting)
Virtua Cop 2 (Rail Shooter)
Yu Suzuki Game Works Vol. 1 (Compilation)
Zero Gunner 2 (Shoot'em'up)
Zusar Vasar (Racing)