As I said in the other topic, I would suggest that you take the course of Rimworld's creator, Tynan Sylvester. Once the game hit steam, he got the ability to distribute an infiite amount of keys, so he set up a system where all people who bought it could redeem a key. Be aware that steam forums can explode quickly, and I would hate to see negative reviews piling on Aven, because it is a pretty damn good game.