N64 and GC are cool, really awesome, but, not counting start, select, and arrows, there are only eight buttons... So unless Game oldies is expanding in huge ways, you might just want the consoles for games like LoZ: ocarina of time, LoZ: Wind Waker, and Metroid Prime.
Buy a GC or a Wii, that's your best bet until a while ;)
And an N64, don't foget an N64!
There are some other site y'know, that do newer consoles but game oldies is about good ol' visible pixels. :)
I thought GC games are going to be downloadable on the Wii U soon?