You can select 1 of 3 control schemes: Keyboard & Mouse Keyboard Only Touchscreen/Mouse Only Keyboard controls: W/A/S/D or Arrow Keys for movement. Q fires your spacecraft's weaponry. E toggles automatic slowdown. Mouse controls: Due to scratch's limitations for touchscreens; shooting, movement and turning are all achieved by touching the screen or clicking and holding down. Mission Objectives: Survival: Don't die. Extermination: Destroy enemies. Siphon: Defend a static Rift Siphon. Escort: Defend a moving cargo transport. Sabotage: Unimplemented. Assassination: Destroy a powerful boss enemy.
Spiritual successor to Brando2000's Star Command. Designed for keyboard & mouse but is also playable with touchscreen and keyboard. Your spacecraft's radar is overlaid on-top of the playspace to save on screen clutter. Uranus was supposed to be the tutorial world but I didn't get around to implementing it. Sabotage mission type was also planned; refer to above.