You have to grab the big white ball and keep it for certain time. You win if you manage to reach that time without the ball being taken.
Your enemies try to steal the ball. If they manage to keep the ball for the same time, you lose.
Once the ball is yours, you can touch it as many times as you like.

Finally, they made a video game of Hungry, Hungry Hippos. Except now you're eating bombs instead of white pellets. Will you be hungry after this feast?