How do you get a full game code/god games?

Download them.

 

Ohh , you can't you have to buy from xbox marketplace , for all i know.

 

fifa 13 online pass = come with the disc
if you're buying used game you'll need to buy them from xbox live marketplace (as DLC)

halo reach god code? sounds like special edition or bundled console
sometimes M$ launch special edition console with goodie
or they simply bundle slight outdated game
like Alan Wake, etc

I guess he don't want to play Halo reach therefore he trade for FIFA 13 online pass

 

Nice explaining, should straighten it out.