Urban Invasion by megajsmith8 2018-04-27T03:26:06Z
Hey, sorry for the late response. Thank you for playing my game! To get UFO upgrades, right underneath where it says 'GUN SPEED' and 'FUEL' there are five little circles. Click on the circles to upgrade if you have upgrade points. -- Also, great strategy! I didn't have time to balance the different buildings too well, but I think it's cool that you found a strategy that helped you progress quickly in my game.