At the moment, an extremely simple and mostly-functional interactive raytracer, including objects that can only be seen in reflections. Does that count as a game? I think Molydeux would count it.
ESC to quit, wasd to move, mouse to look.
If you don't like 1600x900 resolution, you will have to recompile the game.
"A survival horror game where the enemies can only be seen in mirrors? Could add more depth by having dirty mirrors that need to be cleaned?"