The game is currently going though Beta testing on steam. Only a few weeks to go and there will be plenty more levels! Make sure you get your steam key.
i buy game by visa card on itch.io. i just recieve email with link download backed game. how do i get steam key?
This should help:
https://itch.io/t/67604/how-to-get-a-steam-key-from-your-itchio-purchase
