Really old games you have

[wolf92]

not as old as some of them the others listed but, Mega Man battle network 3( I was young and foolish) and FF7( I got the re-release on psp-not sure if that counts)

 

[mad825]

Final fantasy V is the oldest game I've got and it still works although it needs a nice dusting.

 

[Exius Xavarus]

They aren't really old, but I have the cartridges to Golden Sun, Golden Sun: The Lost Age(fuckin' amazing games)and Sonic Advanced 2. I don't wanna get rid of my DS Lite for a DSi or XL because I don't feel like paying Nintendo a second time to play games I already have if I ever somehow lost my Lite. I also have Resident Evil(the remake of the first one) for Gamecube.

 

[Grand_Arcana]

I still have the original Super Smash Bros. and I've seen Pokemon Yellow time and again.