- Arrow keys steer your Amoeba around the petri tray you live in. You advance to the next level you need to eat all the glucose cells, in the bottom right of the screen is displayed how many more you must eat. You are damaged by touching the nasty virus’s and after each cell you eat another virus will appear. Run out of energy and it’s game over. From time to time ‘power ups’ will appear which will help your to proceed.