Developer Commentary

Developer commentary may include spoilers; I recommend you finish PortalZ before reading further.

Commentary for Z chamber 2.

Z Chamber 05
Commentary for Z chamber 5 is not available.

Z Chamber 08
Commentary for Z chamber 8 is not available.

Commentary for Z chamber 11.

Z Chamber 14
Commentary for Z chamber 14 is not available..


Z Chamber 17
Commentary for Z chamber 17 is not available.


Commentary for Z chamber 20.