Mosa Lina is "a hostile interpretation of the immersive sim", which kinda translates into being a puzzle game with no specific solution.
Has workshop support and online coop, all for a bit less than 8€
store.steampowered.com/app/2477090/...
store.steampowered.com
Mosa Lina on Steam
a hostile interpretation of the immersive sim, where nothing is planned, and everything works