Yeah I was kind of surprised to hear you collected Wii games and had a massive collection. I have exactly 5, lol.
Yeah, not sure what happened there. The Wii library is loaded with junk titles, but they're so cheap and there are so many. It's really fun hunting for them and I'm always finding new ones. At some point I'll start hitting a wall with the heavier hitters, but I'm still a long way off from having to decide whether to spend $150 on Mensa Academy. When GameStop stops carrying them it will get harder. They already got rid of the Elite Pro membership (20% discount) and most of the $0.99 games. Their cheapest games are typically now $2.69 after a 10% discount.
Regarding other systems, I collect pretty causally. NES, PS2, and Atari 2600 are probably my next biggest collections and none of those are substantial. NES is too pricey, PS2 has too many, and my Atari focus is primarily Activision and M Network. I'd like to finish both of those subsets.