Cytosis: A Cell Building Game is a worker placement game set in a human cell. Players start with a number of workers and when it is a player's turn, you must place one of your workers in an available location in that cell. Some locations provide players with resources; some are correct actions (e.g. converting resources or collecting cards).

Resources are used to build enzymes, hormones and/or receptors, which provide health points. The player with the most health points at the end of the game wins!