Uh, I haven't counted recently, and when I do count I'm never sure whether to include my pirated/emulated games, but taking into account all consoles from my NES and original Gameboy up to my Wii and including all my digitally downloaded games from Steam (but not counting all the emulations), probably 300-400 games. That's far too many games and I know it. It's partly because I never trade games in or sell them, unless they're so crap that I just want them out of my sight (which almost never happens).