Diamond Abduct Escape

The aliens are winning the fight, and we now rely on you to aid any survivors in escaping the system. Can you help us? A small, simple retro game where you have to kill enemies, and defend your fleet while they attempt to escape; as well as collecting diamonds to increase your score. Any feedback would be greatly appreciated.  Controls: A/D, turn. W, move forward. Space, shoot/interact. Escape, …