A GENOME file is a cell design created by Cell Lab, a free Android game where the player must create organisms that can survive challenging environments. It contains a design for a cell customized by the player. GENOME files can be shared with other users, which allows them to load and edit other cell designs.

Cell Lab comes with 45 challenges where you must design an organism that can survive a particular environment. And as you solve challenges, you unlock new genes that will give cells new properties. You can also play an experimental mode where you set the parameters of the environment then test your organism you designed to see if it thrives or dies.