It turned out that the Plants vs Zombies: Stop Zombie Mouth giveaway we posted about some time ago is limited to USA only however I just tried to redeem the free game and it works:
Here’s what you need to do:
After you give them your e-mail and all use this code to get the game: PEAH8R
You will receive a link to the installer and your personal code to activate the game.
The code you receive is NOT compatible with Steam.