press arrow keys to move, touch a cannon to fire a bullet, avoid red bullets in the green. press space when not touching a cannon to send a person across the green. You get points and money for getting forigen attackers and overthrowing their trench. you can guide the clones to safety through the green using the arrow keys. you are safe inside the brown
it may get laggy a minute or two into the game. :( so you may have to turn on turbo mode later in the game using shift and green flag to turn it on/off.