http://segaretro.org/Videogames_produced_by_Sega
You forgot to put this brutal and insane-difficult yet fun game masterpiece ..
Shinobi for 3DSAlso, remove this :
Nintendo DS
Mario & Sonic at the London 2012 Olympic Games (2011)
Only 3DS & Wii version ever released.
And add these :
iOS/Android
Western
Puzzle & Glory (2015) (Development : Demiurge)
Sonic Dash 2 : Sonic Boom (2015)
Nintendo DS
Western
Iron Man (2008)
Iron Man 2 (2010)
Game Gear
JP Only
Phantasy Star Gaiden (1992)Megadrive
JP Only
Phantasy Star Fukkokuban
Western
Decap Attack
Move Sonic Spinball, Kid Chameleon, Fantasia, Dick Tracy, The Amazing Spider-Man vs. The Kingpin (Spider-Man in Japan), Ecco the Dolphin, and Ecco: The Tides of Time (Ecco II in Japan) from Western to World
(there are JP version for those games)
Move Virtua Fighter 2 (MD) from World to Western (there's no JP version for that game)
Move Teddy Boy Blues (MD) and Phantasy Star II Text Adventure from World to JP only (there's no western version for that game)
And move PS3 & WiiU version of
Sonic & All-Stars Racing Transformed from Western to World
since there are Japanese version for those game.
Famitsu even reviewed those two games.
Sonic & All-Stars Racing Transformed (PS3) – 7/9/8/8 [32/40]
Sonic & All-Stars Racing Transformed (Wii U) – 7/9/8/8 [32/40]
also there are Japanese version too for both Sonic Boom games for WiiU and 3DS, it's called
Sonic Toon.
Other than I mentioned above, this list is already perfect. I like the way you sorted them too, differentiating beetwen word, jp, and western.