Engineer is very early in its development, barely a game yet, with very little content, and placeholder graphics (a.k.a. "programmer art"). You've been warned!
Engineer is a free and open-source game
The game is also designed with the objective to run on low-end or old hardware.
Engineer provides versatile building blocks that players can arrange how they see fit. Emergent gameplay is the rule. Procedural geometry allows intricate shapes. Design your own machines, from the ground up.