Your mission in this free online game is to help the little plankton to evolve. Avoid all the dangerous fish to stay alive. As you advance in the game, you will meet more dangerous enemies. Also you will face a new boss in every level before proceeding to the next. Hold down LEFT MOUSE BUTTON and drag with YOUR MOUSE to move the plankton in easy mode and use the ARROW KEYS in hard mode. Press "S" KEY in both modes to fire. Have fun!