Shark! Shark! is an Intellivision game originally designed by Don Daglow, and with additional design and programming by Ji-Wen Tsao, one of the first female game programmers in the history of video games. The player is a fish who must eat smaller fishes in order to gain points and extra lives while avoiding enemies such as larger fishes, sharks, jellyfish, lobsters and crabs. After eating a certain number of fish, the player's fish grows in size and is thus able to eat a larger selection of fish. However, while the larger fish becomes a bit faster, he is less agile than the small fish and has a harder time avoiding enemies.