I found a pretty funny Internet game called Ozee where you are a little man who must cope with some different tracks, and collect stars.
It’s fun because you need to fix some things in order to implement and then it was physic.
I asked my friends about it could be nice to play in gmod
and they said yes of course :D!
Link to the game: http://www.physicsgames.net/game/Ozee.html
What do you think? it could be cool: D