Earth: Escape was initially made for an art installation. The game is supposed to be controlled by a music instrument converting usb controller, hence the controls are simplified.
"IC 63 Ghost Nebula" by NASA, ESA, and STScI acknowledgment: H. Arab (University of Strasbourg), used under public domain / modified as loopable texture
"Alien (Green) Character Sprite" by craftpix.net used under OGA-BY 3.0