Collect sugars to maintain your speed.Swap plasmids with friendly bacteria and gather DNA fragments to incorporate them and multiply.
Multiply to increase in level and spread the infection - higher levels mean better loot but rouse the immune system to your presence.
Don't dally though, because white blood cells never sleep, and the difficulty rises over time!
Reach 100% infection to win, or die trying.
Hold down left mouse button to move towards the cursor. Space to open the menu/pause.
Better luck next time!