i have a account but I have uninstalled the game. How can I get back the game?
Hi @alexi and welcome!
There are 2 possibilities:
You have bought the game. In that case you should have an email from humble with the download link. If you lost that, but have bought the game, send me your email in a PM and I can recover the link.
You played the game back when it was free. The game is no longer free and require a one-time purchase to own it. You can do that on the website and will get a Steam key as well.