In the pool, my siblings and I (LostLinerLegend, JeepGuy, & AutumnGerbil), we play a game we made up called "PREY VS PREDATOR". First, the prey goes to one side of the pool, and the predator (1 person) on the other. The prey have to get to the other side without being "touched" (which drains your health. Two touches kills you, and you can choose to give up your health to another struggling player, or become a predator). If you are jumped on and held under water for 5 seconds, you are at once killed. The game goes on until all players are predators or no longer prey.
The prey can also retaliate in a game. Throw a thing like a diving ring in the pool (this is your "jinx") and then the prey can pick it up to use for a shield against the predator(s), or use to be able to fight for 10 seconds. When the predator is attacked, he becomes prey. When all predators are prey, or vica versa, the game is over.
*If you are killed, you can choose to give your health up to another player, which restores their health.