To try it out, just click anywhere to get past the menu and then:
- W A S D to move your character
- left-click to throw a minion
- right-click (and hold) to call minions in a certain area
- space to disband (and sort) your army
Throw minion onto a pellet to pick it up and carry it back to their home. They'll carry it to whichever color makes up the majority of the carrying crew. That will then spawn more minions.