Splash Timer Ball Water bomb timer game Pass between players until time runs out Losing player is drenched with water Includes ten water balloons This is the Splash Timer Ball from Tobar. Garden throwing game with exploding water bomb timer. Fill a balloon with water, then carefully fit it inside the enclosure. Twist the device to prime it and start the game. Throw the plastic timer between players and keep going until time runs out. As soon as the timer ends the water balloon inside explodes, drenching the player currently holding the game.