Don't run out of glucose, because your cell will perish if you do. Your resources are displayed on the top left, which are: glucose (white squares), oxygen (blue circles), phosphate (purple triangles) and mutation points (MP for short). You can also buy upgrades on the top right corner. Flagella costs 5 mutation points and increases the player's speed. Chloroplast costs 8 mutation points and generates 0.05 glucose per chloroplast. Nuclei (Nuclease in its singular form) produces 0.2 mutation points. Mitochondria uses 0.05 oxygen to produce 0.05 glucose. Phosphate doesn't have a use yet.