Simply cough up your hard earned currency and you're sent a serial code and a download link - that's it. They will also offer DLC and free game trials too.
They're following Amazon's bid to try and siphon what they can off the digital marketplace, although Amazon abandoned their console DLC services. "For a PC, you receive an email with the code and a link to download the content to your PC," says GameStop.
"For a console, your code will be on the confirmation page you see after purchase, as well as instructions for installation." They'd best offer competing prices as otherwise what would be the point in selling XBLA goods when those who use it can just buy directly.
GameStop hasto better explain their new digital venture.