Okay, because of the lack of a survival map that has working physics and creeper explosions, I have set up an account based completely on working towards making a small one. If you want to help, just announce it on the forums. After someone has finished their turn (for now) they will say "FINISHED" in this thread. Whoever wants to go next will then post saying so, and how long they will take. This is all working towards getting a working flatgrass, so first we have to clear EVERYTHING and then build from there.
If you want to help, just email me at [email protected] and I will send you the password and username.
I will be working on it for a bit, then post when I'm done.