- Hang on:

Basically the GM gathers all of the members in one place, he then asks them to start climbing a wall until they reach the highest point of it, (they still climb, without getting any higher) the ground will be full of mines. The GM throws bombs that don't do any damage at the players, which will push them away from the wall, and will push down as well. The last player who is still climbing the wall wins a point, and so on. Preferably done at maps with low "sky" limits because bombs won't be effective that much if the limits were high because the players could just keep going on. I don't know if we can really do this, but I hope it will be tried sometime.