Some of you guys have almost as many games for a single console than I do for all of them combined. My total tops out at about 25-30ish games per console generation, with most being picked up used. I also had decent little NES, Genesis and Turbo-Grafx collections when I was way younger, but those have more or less all been scattered throughout various life events.

My collection:

SNES - 11 games (I think), 100% completion. There are one or two that friends have that I'll likely never see again. I lose a lot of games to friends, but I think I'm most sour about the SNES ones.

N64 - 7 games, 100% completion. This goes back to before I received my PS1 and more or less gave up on Nintendo completely.

PS1 - 22 games (5 PSN), 100% completion. I probably had one or two more that have gotten lost, never given back by old friends, etc. The most glaring being Legend of Legaia. Man, I loved that game.

PS2 - 26 games, 92% completion. A few of these games friends of mine have borrowed. I've accepted that I probably won't see these ones ever again. The only two I haven't completed are Okami and Psychonauts. Okami I got off a Cragislist ad, got bored of it halfway in, then stopped playing once I got my PS3. Psychonauts a co-worker got for me years ago. I haven't finished it because I flat out don't like it.

XBox - 3 games, 67% completion (Jade Empire being the one I didn't finish). I never actually owned an XBox. An old roommate had one and I just bought games for it and took it to my room when we'd trade XBox and PS2. This is one of the friends who has a PS2 game I'll probably never see again: my beloved MVP Baseball 2005.

DS - 5 games, 60% completion. I actually had 8 games up until a while ago, but traded 3 in for a huge discount on Dark Souls (one of the best trades I've ever made). I also had 4 more games when I first got a DS (system + 8 games for $100 from a friend, sweet) but gave those to my sister.

PS3 - 25 games (10 PSN), 88% completion.