Ludum Dare is a game jam that happens three times a year. Last occurrence was July 2017 where the theme was “Running out of power”. I participated for the first time with a friend of mine. The resulting game is top down 2D zombie shooter, where you are equipped with a flashlight and a gun. However the gun requires power to shoot and the flashlight does as well, so you have to find more power before you run out…
Link to game on Ludum Dare.