My game revolves around the idea of being able to go back in time and correct your previous actions. The main system to allow this, a sort of deterministic simulator, is done. https://www.youtube.com/watch?v=XqG-HMhpCNk

Now I need to add bullets (mostly implemented from the simulator side already), enemies, goals, proper UI, sound. I'm confident I can get something pretty playable for the compo and I'm really liking the game.