Portal Gun & Chambers
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GLaDOS watches over the test chambers, flanked by turrets.
Pick up cubes with the portal gun and carry them through the chamber.
Look through a portal and see the other side in real time.
Big multi-stage chambers with goo pits, catwalks and lasers.
Turrets track you with red laser sights.
Wheatley is in here too.
Cubes stay held in front of the gun as you walk and aim.
Portals work on any portal-able surface, indoors or out.
The gun works anywhere. Link two spots across the map.
Aerial faith plates launch you across the room.
Thermal discouragement beams hit receivers to open doors.
Send a laser through a portal to reach the receiver.
Lasers pass through portals and keep their path.
Hard light bridges. Put one through a portal to cross the gap.
Repulsion gel bounces you and cubes high into the air.
Paint the floor blue and jump to the ledge.
Propulsion gel and a long run-up to fling yourself across.
Toxic goo kills on touch. Find another way over.
Conversion gel turns any surface portal-able.
Portals on facing walls; think in both directions.
Time your way past the crushers.
A light bridge spans the whole chamber.
Propulsion gel highways to build speed.
A cube puzzle over a goo pit.
Excursion funnels carry you and cubes across the room.
Gel droppers paint the floor so you can move fast.
Emancipation grills block portals and fizzle carried cubes.
Lasers, grills and the exit door.
Each chamber is hand-built. 90 of them in all.
Get past a row of turrets to reach the exit.