Tasty Planet: Back for Seconds

Tasty Planet is a top-down and side-scroller video game series developed by Vancouver-based studio Dingo Games and published by Delaware-based PlayFirst and Dingo Games for Windows, Macintosh, Linux, iOS, and Android. The games are focused on the evolution of an array of characters, notably the prototype bathroom cleaner or nanotechnology experiment, the "Grey Goo", which is based on the hypothetical doomsday scenario of the same name. Each game is divided into levels, following a controllable character that can eat anything smaller than itself, constantly growing in size every time it eats. Levels are grouped into different "chapters" that feature different entities and environments, such as parks, cities, the ocean, outer space, and in some cases different playable characters and storylines. The plot is also serialized through comic strips that appear at the beginning and end of some levels, explaining the background of the protagonists and in some cases connecting different chapters together.