I always end up losing video games or things in general and I end up getting them back around 1 month later. So, its pretty normal in my case.
H-J: You need to elaborate more, like a particular game.
Particular game? Well...
WarioWare: Touched(sold)
Mario Golf GBC (I did find it, but I ended up losing it again and now its lost forever)
Pokemon Emerald
Mario & Luigi: Partners in Time
Sonic Adventure GC
Pokemon FireRed
Sonic Adventure 2 GC
Super Smash Bros. Melee
Pokemon Red (this one is the same as Mario Golf GBC)
Pokemon Puzzle League GBC(sold)
Pokemon Pearl
Kirby and the Amazing Mirror(sold)
Kirby Squeak Squad(sold)
Fire Emblem(7): Rekka no Ken(sold)
I probably have more that I lost, but that's about all I remember. I don't know what I did to get them lost in the first place. I guess because I'm just careless and I forget things kinda easily.