All of my GameBoy Advance games.... and the system itself!

Since I don't trade in my video games I don't face this problem, but there is one thing I regret, an ex-friend from work broke his leg and couldn't do much so I lent him my PS2 and 150 games, since my time at that moment was concentrated on finishing all the gamecube games that just came out. I remember going to gamestop and and looking at a rarer game to see in the used games and wondering who the idiot was who traded it in, since I already had the game I put it back. On a side note the "friend" worked at this store part time. And I eventually found/figured out that my "friend" sold my PS2 and games for pot, though he wouldn't admit it. To make the story short, I no long talk to the thief and it took a while but I recollected every single game plus some.

There's a few that I eventually rebought, but regretted ever selling in the first place, like Zelda: Four Swords Adventures and Donkey Kong 64. Then there's Metroid Prime 1-3. I sold them since I got the Metroid Prime Trilogy, but I still kinda wish I had the original copies too.

Mario Tennis Open .

Tank tank tank.... I regret buying that so much. NO ONE EVER BUY IT!!!!! If someone says it's good, DON'T BELIEVE THEM!!!!

Ty, The Tasmanian Tiger 2 for PS2. I had both the GBA and PS2 version of the game, so I traded in the PS2 version :/ It should had traded in the GBA version instead, though I was to stupid at the time :v, I miss running like crazy on the group's van :P

Excitebike 64! I remember liking it a lot, but I had to sell it ages ago for a certain reason!  

Fire Emblem: Path of Radiance (GC)
How could i...

stupid exgirlfriend took my GC WW. dont care about WW, but it was the box with the asterquest disc added,,,

Never sold a game luckily