I have roughly 70 games for PC, mostly through Steam and GoG.com. Console wise I have about a dozen PS2 games, ~12 Wii games, about another 8 WiiWare/Virtual Console games, ~16 N64 games, ~47 GameCube games (yes, really) and ~14 SNES games. And then, handhelds, um... I still have about 5 original Gameboy/Gameboy Colour games, ~10 GBA games aaaaand... *rummages* ~30 DS games.
tl;dr - 225ish all up. Approximately 70 for PC, 110 for consoles and 45 for handhelds.