Choose clone-mode and click the green flag. You can also start with mode 1 and change modes so as clones die they are created as the new mode. Changing modes when you've started with mode 2, 3 or 4 won't change anything.
I just felt like experimenting with clones. Mode 1 - new clones are created by forking and (roughly) follow the main sprite. They die after a while but new ones are created. Mode 2 - 150 clones are created at the start and move in a straight line (angle is random), bouncing off the sides. Mode 3 - as mode 2 but with a central divider and clones bounce of that as well as the sides. The main sprite can pass through the divider - can you spot it? Mode 4 - as mode 2 but the clones run away from other random events. Mode 5 - each clone has a random mode (1-3 as above). Some will therefore start as mode 1 and die but may not reappear as mode 1 so eventually there will be no mode 1 clones.
