Guys, I found the Easter Egg! You have to press Alt+F4 in the game. I know this usually closes the thing you're on, but not in the game! It has a secret function you get to find out!
so i got all the upgrades maxed, flown around the world a few times, and still have cash....hmmm....i think i might board an airplane and fly around that!
 "Kommunicate Rev7 (Alpha)"){kind=icon}
 "Learn to Fly 2"){kind=icon}
 "Shootorial #5"){kind=icon}
 "Go Chat!"){kind=icon}
 "Shootorial #4"){kind=icon}
 "colourPod"){kind=icon}
 "Kongai Launch"){kind=icon}
 "WarFlow"){kind=icon}
 "Zombie Tower Defense 4"){kind=icon}
 "Flight"){kind=icon}
 "Open Doors"){kind=icon}
 "Ether War"){kind=icon}
 "The Trader of Stories"){kind=icon}