4 July 2023
18 August 2022
3 April 2022
Added better bullet points to the Easter Eggs/Glitches addendum
m−1
Added bullet points to the Easter Eggs/Glitches addendum
m+5
I have added a method for entrapping yourself within Portal's Test Chamber 13 onto the Easter Eggs/Glitches addendum.
m+423
31 May 2019
3 December 2017
22 August 2017
31 May 2016
28 April 2014
29 November 2013
25 November 2013
12 October 2013
18 August 2013
4 September 2012
Added "See Also" section with links to the harder/competitive chambers
m+93
Missing one vital sentence.
m+27