Floor placement is a kind of mix between random walk and recursive backtracking for maze generation. The actual difficult part was getting the correct wall segments to be in the right position AND orientations. I think I found a pretty elegant solution.

Procedurally generated terrain and plants

WASD, LALT, LCTRL, LSHIFT, SPACE, Q, E, Z, X

With both Motor joints and Hinge Constraints with ActuatorType set to "Motor" Uncopylocked

Welcome, cadet, to your first training session! Here you will learn the basics of movement in 0G.