Use the WASD keys to move around in the city (avoid hitting towers!). Click to shoot. (This comes in handy when you are attempting to save the city from an invasion of alien bombers...) Try to beat the cloud high-score! :D
The basic principles of this 3D city, were taken from Griffpatch's tutorial. All the rest was done by me. And the music, is unmistakably, Interstellar.
