Just activated LGRTZ-K0JGZ-4JGHT
As b1gLoRD said, it's DLC and doesn't work without the base game.
Comment has been collapsed.
19 Comments - Last post 34 minutes ago by FranckCastle
14 Comments - Last post 37 minutes ago by GhostW
21 Comments - Last post 39 minutes ago by Aerctaure
1,088 Comments - Last post 1 hour ago by vlad767
250 Comments - Last post 2 hours ago by friggintaser
41 Comments - Last post 2 hours ago by bat0
15,452 Comments - Last post 5 hours ago by fejj122
1,165 Comments - Last post 30 seconds ago by SyrslyTwitch
26,583 Comments - Last post 11 minutes ago by buzzer0
217 Comments - Last post 24 minutes ago by Habaruku
17 Comments - Last post 43 minutes ago by LordDarkness
64 Comments - Last post 52 minutes ago by Cole420
7 Comments - Last post 1 hour ago by ZoOmEr4402
21 Comments - Last post 1 hour ago by Axelflox
There are more keys and seem they are still unused:
Free mini-game dlc
And they are developing new features including saves, new achievement and multiplayer. All for free !
Dev post about development
Edit: More key
Comment has been collapsed.