Or even...
Capture the enemy team's water balloons! (We'll call them dragon eggs lol)
Each balloon/egg you steal from the enemy team's keep gets you one point, and if you get wet by an egg cracking you have a 30 second respawn instead of the usual 10? Each team could have like 5 eggs, game over when all the eggs are captured/destroyed? Or time it to see whoever has the most eggs in their keep at the end wins?
We'd have to play around with the rules, but yeah! LETS DO IT!