I dont' think I could count my PC games. They tend to come and go anyway. I remember 10 years ago when my game boxes (bigger back then) made 2 piles my height in the corner of my room before I finally binned them all.
Now I own 2 Wii games. Zelda and Super Smash Brothers. Of course, in a sense, I own all the Wii games, though I end up playing Quake & Tyrian on it more than anything else.