I''m working on a space sim game that uses ODE physics engine. My game is sort of similar to Descent in a way that ships will fly inside closed levels. Only the levels will have lots of room for maneuvers. I''m trying to come up with a level design that would take full advantage of the ODE rigid body dynamics engine. My current idea is to do some kind of gigantic alien factory, with large gears and moving parts. But I don''t have anything more specific so far. So, can you guys come up with good level design that shows off realistic physics? Or at least suggest certain features that could be added to such a level, provided that the game is a space sim, players fly in space ships. If you want to see what I have done so far, you can download: ftp://64.60.177.194/fig/space_sim.zip however, it''s not much to look at. No collision detection yet and noone to kill