Goo (Tasty Planet)

The Goo is a piece of nanotechnology in the video game Tasty Planet. It is able to consume anything smaller than itself, and when doing so it grows, becoming larger as the game progresses.

Death
In the original game, the Goo dies after consuming the entire universe, imploding and starting a new Big Bang. In Back for Seconds it went on consuming the Turtles of Time as well.