Kenryoku_Maxis on 08 November 2009
If you're counting both the GB and GBC...I'd have to say that. But only because the DS isn't done yet. At the moment, I'd actually say the DS and GB are tied. But since I can only choose one, the original GB/GBC. You just can't beat its huge library, including Zelda, Metroid II, Pokemon, Dragon Quest I-III + Monsters and more.
Soon however, the DS is probably going to have a similar (if not surpassing) library of games to the one I just named. Once I play Dragon Quest VI and IX and if they added a 2D Metroid to the system, it would probably be DS hands down.
Six upcoming games you should look into:
