I would choose Water Slides. There is nothing better than a great Water Slide.
But I agree. However, it is very hard to find things that should be split evenly. Cats and Dogs should have been...but wasn't. How about Food? Pizza vs. Hamburgers? Nope. Colors? Maybe.
How about Pirates vs. Ninjas? Nope landslide Ninjas. They should really just make it random.
I am hoping they eventually add bigger maps and allow for 4 on 4 teams They could drop the number of players to 3 players each, or even 2.