I've installed the last and previous download, but for some reason it doens't launch, I wonder why?

Anyway I will keep looking into this, looks very interesting.

Hey Julesmig,

For some users they cannot launch the Itch.io version as it tries to force launch into Steam but the steam version might launch for you.

https://store.steampowered.com/app/884350/The_Unfolding_Engine_Paint_a_Game/

Ill look into why it might not be launching.