Here is my fast made map for the contest.
Mapname: Satmush
Engine: Quake 2
It has 20 brushes in the playground area. 6 brushes makes the skybox and 1 brush for trigger_kill when you fall down.
http://personal.inet.fi/hima/quazilin1/Maps/q2/satmush.bsp
Hope you like it.
-quazilin