Chapter 1 - Blue Only I

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Chapter 1 - Blue Only I

Chamber number 0.pngChamber number 1.png

Test Chamber Infobox previous.png
Test Chamber Infobox next.png
Test Chamber Infobox Portal Guy.png
Chamber progress 0.pngChamber progress 1.pngChamber progress slash.pngChamber progress 1.pngChamber progress 6.png

Gg blue only3.jpg
Chamber icon cube button.pngChamber icon dirty water on.pngChamber icon laser redirection.pngChamber icon laser sensor.pngChamber icon laser field.png
Chamber icon turret hazard.pngChamber icon crusher hazard.pngChamber icon light bridge.pngChamber icon excursion funnel.pngChamber icon faith plate.png

Chamber gel indicator blue.pngChamber gel indicator off.png

This is the second level of the game, and the first actual test involving paint (as Nigel says in the previous Test Chamber).


This test takes place across three different rooms. The first two rooms serve to teach the player the basics of using the Paint Gun. The third room is an advanced navigation course, teaching more tricks you can do with Repulsion Gel.




  • Walk out of the makeshift Chamberlock.
  • Spray the wooden panel in front of you with Repulsion Gel from the gun. Use it to jump over the wall.
  • Proceed through the door.
  • Spray the wooden panel and walls in front of you and behind you with Repulsion Gel.
  • Jump off the floored gel, and use the height and wall-mounted gel to reach the ledge. This will later on be referred to as the "Gel Wall Jump". The verb is to wall jump [to somewhere] with gel.
  • Spray the wooden panel extruding over the next pit with Repulsion Gel.
  • Use it to jump over to the exit of the second room.
  • Hop into the mid-test Chamberlock vent, then exit the room you end up in.
  • From there it's simple Repulsion Gel-aided navigation to reach the makeshift Chamberlock.