Orbit Wars is a two-player versus game set in the orbit of Earth. The game features working gravity, pulling players toward Earth and the moving Moon. Players must manage their fuel carefully and utilize their complement of explosive and EMP torpedoes to force the other player into the Earth or Moon's gravity well. I'm quite proud of this project since not only is it a standalone game, not a mod, but I completed it with near-zero amounts of help from anyone else (although I did have to look in my old physics textbook to build the gravity system).
Player 1 controls: WASD to move LSHIFT for explosive torpedo LCTRL for EMP torpedo
Player 2 controls: ARROW KEYS to move RSHIFT for explosive torpedo RCTRL for EMP torpedo
Be warned that newtonian physics are in effect - if you apply thrust in one direction, your player will not stop moving until you apply thrust in the opposite direction. Your first objective in the game should be to get to one of the yellow fuel depots, as moving around and firing torpedoes costs a lot of fuel.