this is really incredible and innovative concept my friend @hatu, everybody likes to win, but the big reason in here is to help others right @crypto.piotr , also helps to understand much and how blockchain works, get rewards for free that sounds incredible for many people, this is called future also, in a couple years everything will be free to get everything using blockchain and cryptocurrency, it could be additive if you win rewards all the time playing the game, but if you can buy some tokens or use some kind of exchange it could be complete and will be awesome ....