Nintendo EAD: Goes without saying really, responsible for many of what are considered the best games of all time
Team Ico: Ico and SotC were both fantastic and among my favourite games of all time, I just hope The Last Guardian is worth the wait
Monolith Soft: Own only a few of their games, but the ones I do own are amazing
Game Freak: Made the games which defined my childhood and remain some of the best RPGs
Ensemble: Same as Game Freak, but with the RTS genre
Rareware: The likes of DKC, Banjo and Blast Corps are classics, it's a shame to see what they've become