Portal 2 (Jul 28, 2009 prototype)

Portal 2 (Jul 28, 2009 prototype)
Build date Jul 28, 2009 Dump status Released File release date August 29, 2026 Lot Steam2 Content Server Ownership Valve Game Portal 2 System PC Genre Puzzle Release date WW Apr 18, 2011

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A prototype of Portal 2 for the PC.

Notes

• To run the game, you need to run hl2.exe with the arguments "-game portal2 -tempcontent".
• Depot ID is 852 and version is 0.
• Contains countless differences from the final build.
  • Storyline is completely different, having you play as Mel and gather Personality Cores found at the end of testing courses to repair GLaDOS.
  • Uses otherwise unused mechanics throughout its campaign, such as the Aperture Science Self-Esteem Field and Hover Turrets.
• Contains leftover assets from Valve's Directed Design Experiments, such as Two Bots One Wrench and F-Stop.

Screenshots