Scuba Steve is diving and comes across a jellyfish swarm. As the player and taking on the persona of Scuba Steve, you have to dodge the jellyfish so they don't sting you. The space key is the only button you need to direct Scuba Steve up and down the screen to dodge the jellyfish. Be ready though, because there is only a three second countdown after pressing start, after, Scuba Steve will start falling to the bottom of the ocean. If he falls to the bottom, the game will be over. Good luck ;)
