Score points (and take damage) for every collision. Survive as long as you can! Use WASD for movement, 'Tab' to switch perspective, left/right with mouse or arrow keys to move camera, up/down with mouse wheel or arrow keys to zoom in/out, 'Esc' or 'Backspace' to return to the title screen. Source code, etc.: https://github.com/theDrake/unity-experiments