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Portal Beta 2005 & More 2006 Content
Leaked Portal 2005 Beta | Origins of the Beta Files | Comparing Beta maps to the Final Game's maps
Portal Beta Maps - Epsoide 1: lvl maps
The FIRST Portal 2 BETA LEAK! - A Quick Dissection
Playing the Portal 2005 beta maps in Portal: Project Beta (2006 beta) Part 2 of 2
Portal Dev Test Map
[Portal Beta] GDC Demo from 2007
Valve's First Attempts at 'Harder' Portal Test Chambers
Portal: BETA - 2005 Version - Complete Game
Portal 2: Early Animation Tests
[PORTAL BETA] Lab_lvl3 (chamber 16) with commentary
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Last Updated: August 20, 2026
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![[Portal Beta] GDC Demo from 2007](https://i.ytimg.com/vi/R1X3cyvEi6w/mqdefault.jpg)
![[PORTAL BETA] Lab_lvl3 (chamber 16) with commentary](https://i.ytimg.com/vi/7oP0v4suWk8/mqdefault.jpg)
