Due to E3, GOG is currently giving away 1500 different games for free, but you can only redeem one
Enter the link and it will enter a code automatically, then you can grab the game you choose for free (note: it's currently under very heavy traffic, so expect it to not work quite well)
https://www.gog.com/redeem/MMLXXVII
Enter the link and it will enter a code automatically, then you can grab the game you choose for free (note: it's currently under very heavy traffic, so expect it to not work quite well)
https://www.gog.com/redeem/MMLXXVII