Galactic 123: The Mission. The militaristic Terran Union controls a considerable region of space. A league of planets, however, have rebelled. In order to stop the rebellion, a special team is sent. Things go wrong soon enough. The player gets to control several weapons and upgrades, to fight many enemies while visiting different places. How to play: Move with arrow keys / WASD keys. Aim and fire with mouse. More instructions given in the game. Move with arrow keys / WASD keys. Aim and fire with mouse. More instructions given by the game.