its possible to make fully 3d models with med.
I create mine from the boots up, vertex, by vertex, face, by face, then extruding, and repeating where needed.
I've created 100s of small projects over the last 7 years; So I wouldn't be surprised if your friend accelerated with 3dgs quickly, and made this game; since its very user friendly.
I'm going to check the game tomorrow. Off to bed soon, Just waiting for a few answers on my thread.
cheers.