Posted December 29, 2012
Issuing licenses for games can be a tricky business. Remember, GOG isn't selling of stocks of games they have bought from wholesalers, but every sale must be done under a proper licensing agreement. Maintaining an expiring date on those codes gives them some needed security.
Shadowcat: Expiry dates for gift vouchers are wrong. They're just wrong. Don't do it. Stop doing it!!
And I'm pretty sure GOG will give you a no-fuss refund if they cannot redeem a gift code anymore.
If there is one thing GOG always stayed true about, its there extremely user friendly billing support.