Quantum is a puzzle platformer that uses mechanics similar to Portal. Launch your three-eyed, donut-shaped character to the goal in each level with the help of portals. Portals will allow your character to avoid hazards and reach areas that he can't be launched to. You can only create portals in spots that are in your character's field of vision. Your mouse is used to launch the character and shoot portals. Click on the character, drag your mouse to set the angle, and then release to launch him. Click anywhere on the screen to shoot a portal.