[EricH]

I've got a game for ya, maybe a little simple but it'll work.

The game piece: A bunch of golf balls. (Let's just say 16, number can be varied to suit field size.)
The field: A large-ish flat area with a border. When I last did this game, 4'x8' with a 4" high border worked just fine (16 golf balls, 2 robots at a time).
The scoring area: We used golf practice cups, like you might find for indoor putting practice on any random floor. Something like that, or some sort of bin/box with one side mostly cut away.
The object: End up with more golf balls in your goals than your opponent.
The rules:
--Matches are X minutes long, say about 2.
--No intentionally disabling/damaging/etc. your opponent. (To make this one tricky, require a "shutoff" switch in an easy-to-hit location on the robot--don't hit your opponents's switch!)
--Descoring is LEGAL, if you can do it.


I've seen this one done with VEX "squarebots" with minor modifications to the robots (fixed herding jaws being the one I remember the most). If you want more complexity, change the goal type from flat-ish and open to a deep box with a hole in the side near the bottom, big enough to put a small ramp in but not big enough for a robot to go into.