In this criteria, nothing is better than Factorio, IMHO. Get Factorio, and you will soon solve interesting problems and design systems, and sink hours into it.

In this criteria, nothing is better than Factorio, IMHO. Get Factorio, and you will soon solve interesting problems and design systems, and sink hours into it. This game is the ultimate boxed environment for learning to _automate_ and build sustainable systems. The experience is great. Oh, and this game is Turing complete, and people have made Conway's Game of Life, and adders, and computers in the game. And the game is very fun to play as well. And it can be played in Linux, too. Shopify reimburses their engineers if they buy this game.