A steam key that I got for free from IndieGala. I can't use it, since I don't have (or want) the base game. Anyone who has the base game, feel free to enter.

The DLC has been taken off the steam store, but I'm almost certain that the key still works, anyways. I think it still works, since I tried to use the key (IndieGala gives "secret game keys" away) and it said "You can't use this key, since you don't have the base game." It didn't say anything about the key being invalid, so it should work.