Can you trade video games for video games

Yes, lots of retailers do special offers where you can trade in a video game for some money off a new one. They normally do offers where if you trade in a month old game, you can get a just-released one for £10 and stuff like that. I'm sure that both GAME (UK) and GameStop (US) both do that. And you can always trade games with your friends, if that's what you mean...