Test Chamber 03

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Test Chamber 03
rex_03_temporary.bsp Temporary

Chamber number 0.pngChamber number 3.png

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Test Chamber Infobox Portal Guy.png
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Rexaura Test Chamber 03.png

This Test Chamber is the fourth level of the game, and introduces the player to the Green Energy Pellets, as well as the Goo.



  • Fire a portal at the raised platform above the orange Portal Spawner and go through the latter.
  • Place another portal on the angled Panel and jump down into the Autoportal.
  • Fire yet another portal on the portalable surface in the alcove on the left and take the Weighted Storage Cube through it.
  • Place the Cube on the Super Button.
  • Repeat the first two steps, then fire a portal at the spot on the wall where the pellet is bouncing.
  • Fire another portal opposite the High Energy Pellet Receptacle, like in step 3.
  • Wait until the Receptacle activates and then go into the Chamberlock.

Video walkthrough