NES
rainbow island (ivé found it for over 25 dollars and its not a great game, sould be somehow rare).
SNES
Super mario RPG.
N64
mario party 3 (paid 70 bucks for it when it first came out. 4 or 5 years later it stopped working, and i've heard now is considered a rare game, still keep the cartridge)
banjo tooie (is a ery common game for me, but seems to be hard to find, i don't know)
super smash bros (i had 2 copies, the bad one and the not so bad one. gave away the not so bad one in exchange for an snes. the bad one just had a bad sticker, so i decided to take it out. still waiting to buy the label printer).
Game Cube
Pikmin 2 (the rare edition)
Metal Gear Solid Twin Snakes
mario dance dance with the carpet (my brother just wanted to buy that thing, its supposedly a collectors item now)
PS1
Final Fantasy 7, black label edition. (got it for 10 bucks, but there's no back insert and no manual)
PC
Glover
a cd from a top gun game, don't know which one it is, my dad's a pilot and he wanted to practice
... i want sooooo much a copy of earthbound