Note: If the game is running slowly, open the options by pressing "Esc" or "P" during the game (or access it from the main menu) and set the Effect Level and Image Quality to Low.

Controls

Left Mouse Button: Launch a Portal
Left and Right Arrow Keys or "A" and "D": Movement
Up Arrow Key or "W": Jump
Q: Launch a blue portal
E: Launch a yellow portal
R: Close both portals
F: Pick up an object
~: Open up console (enable through the options)
O: Quick quality adjust
Esc or "P": Pause game.

Tips:

- Use portals to navigate to the exit of each test chamber.

- Momentum is conserved when traveling through portals. Use this to sling shot yourself to seemingly unreachable places.

- Use Q and E to selectively use the color of portal you wish to fire.

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