You start each level in a dark cage with only a paintball-gun with limited ink available to help out. You must use the ink to reveal the walls and items in the cage in order to eventually find the exit. In true puzzle-strategy-platform style, the ink in Darkness - The Cage is limited, and you need to spend it wisely or you'll never escape the Cage. The less ink you use, the higher the score. Use WASD or ARROW KEYS to move. Use YOUR MOUSE to fire ink. Good luck!