swarming

These little robotic creatures are working hardly. The red army is trying to sort the red blocks, the green army - the green blocks. Of course, this process takes time and unfortunately, I don't have enough space on my cell phone.

:) They have, of course leaders. These are robots that place themselves somewhere and wait for the others from the army to store collected blocks around the selected location.
They can also, communicate with each other, but only with very simple messages, like.. "Hey, I'm here, in front of you, let's both turn left, or we'll crash." (ok, not exactly this way.. however..)