While you are living and going about your daily business, the cells inside your body are working hard. To restore damaged areas, patch holes and return your organs to their former strength. In the game Cellf-Defense you will control just one cell. This will give you the opportunity to understand how complicated everything is. Control the cell by collecting colored dots. This will cause the cell to grow in diameter and gradually reduce its rate of movement. Beware of green cells appearing. When colliding with them, all previous progress will be lost, and if the cell is sweet, it may even die in Cellf-Defense.