Slime CCG

Once the number of entries fills up to 10k, you will get your game (its guaranteed, but it takes time)

Register/Login (dont forget to verify your email)
http://www.opiumpulses.com
Go to the Giveaways and Enter them
http://www.opiumpulses.com/giveaways/pjI1m/slime-collectible-card-game
Once the entries fill to 10000 You will get your email with a key (it can take a while, but looking at the numbers it should be done pretty soon, a day maybe)