Portal: Revolution/en
Portal: Revolution is a fan-made campaign of Portal 2, taking place soon after GLaDOS's demise in the original Portal. Set inbetween Portal and Portal 2, Portal: Revolution tells a brand new story using new characters. You play as a test subject who is awoken by a personality sphere called Stirling and join his mission to find a powerful device capable of restoring Aperture to its former glory. This is the first Source game to use the 
Strata Source engine branch, which is a heavily modified version of Source engine that combines the code of 
Counter-Strike: Global Offensive and 
Portal 2 and add various new features to bring it closer to modern standards. This allowed it to introduce many mechanics and improvements to the engine to create an experience which would be impossible in Portal 2.
Tip: Portal: Revolution is "99% P2CE", according to the developers; as such, those looking to make mods for this game may wish to build their mods on 
Portal 2: Community Edition instead, which also will have proper Workshop support.System Requirements
Last updated: February 14, 2023
 Windows |
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| Minimum | ||
| Operating system (OS) | 10, 11 | |
| Processor (CPU) | Intel Core i3-8300 or similar AMD CPU Requires 64-bit capable CPU and OS |
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| System memory (RAM) | 8GB | |
| Hard disk drive (HDD/SSD) | 12 GB | |
| Video card (GPU) | Nvidia Nvidia GeForce GTX 750 or  AMD R7 265 GPUDirectX 11 compatible |
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Note:The game can be unofficially run on Windows 7, 8, 8.1, however Steam support for these systems have been already dropped which may cause issues in the future and plus, bugs & crash report and support for these older operating systems will be ignored by the developers. Additionally, CPU and/or GPU below the system requirements or the one that matches the Portal 2 may be able to run the game on lower settings.Chapters
| Portal: Revolution Chapters
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 The Human Resource |
 The Default Route |
 The Surface |
 The Diversion |
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 The Cutting Room Floor |
 The Climb |
 The Collision |
 The Remote Execution |
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