Is this publishers or developers?
Nintendo EAD Tokyo (Mario, Donkey Kong: Jungle Beat)
Game Freak (Pokemon, Pulseman, Drill Dozer)
Intelligent Systems (Fire Emblem, Advance Wars)
Hal Lab. (Kirby)
RARE pre-MS (Donkey Kong Country, Banjo Kazooie, Goldeneye)
ok other than Nintendo and its (ex) second parties.
-Blizzard (Starcraft)
-Konami (Castlevania, Gradius, and Contra teams)
-Capcom (Megaman)
-SEGA (Most Sonics before Heroes, Streets of Rage, Virtual Cop, House of the Dead, Madworld)
-RARE (Post MS, Kameo namely)
Pixel Art can be fun.