How about some kind of obstacle course / scavenger hunt.....with MANY different ways to score points-- ....field including maybe a 3 ft tall platform "the stage" where robots could earn points & collect props by climbing on top or crawling underneath......balls through hoops, frisbees through hole, rings on pole, boxes stacked on shelf....etc Ample small point props.....limited big point items.
No robot could possibly do it all.
Simple scoring.......2 pt per ball here.......3 pt per ball there......etc
Would get a WIDE variety of bots......making for very interesting alliances
I didn't think this through......but it's an interesting thought!
Lisa T