how do you play gc roms

how do you play the gc roms i mean i download it once but it did not work it said it was corupt after i got it out of the zip file

 

Then you probably got a corrupted download. It may happen, since these files are relatively huge. Lots of time spent, means more time for corruption to happen.

Gamecube games would be played in a Gamecube Emulator. Like Dolphin.
http://www.dolphin-emu.com/news.php

It works well with some games. Some versions work better with certain games than others. I personally have only played one of the Fire Emblem games, and it worked fine.

Or on a modified Gamecube (Which I do not know how to do)

 

Xeno GC works best but some homebrew programs may not work so well as it just unlocks all region play and burnt game usage.

Or on a modified wii-software or chip works-apparently you could burn several games onto a disc with the right tools and the wii would pick them up-thus saving space and disc