Portal 2/en
Portal 2 draws from the award-winning formula of innovative gameplay, story, and music that earned the original 
Portal over 70 industry accolades and created a cult following.
The single-player portion of Portal 2 introduces a cast of dynamic new characters, a host of fresh puzzle elements, and a much larger set of devious test chambers. Players will explore never-before-seen areas of the Aperture Science Labs and be reunited with GLaDOS, the occasionally-murderous computer companion who guided them through the original game.
The game’s two-player cooperative mode features its own entirely separate campaign with a unique story, test chambers, and two new player characters. This new mode forces players to reconsider everything they thought they knew about portals. Success will require them to not just act cooperatively but also think cooperatively.
Note:Portal 2 grants access to the Source SDK and SDK Base games. Its store page does not mention this.Contents
Features
Portal 2 engine branch introduces:
- Improved shadow mapping
- The entity
env_projectedtextureis used extensively throughout the game. Compared to previous implementations, it has a higher default resolution, better edge filtering, and support for the caching of shadows from static objects. - Sound operators
- For defining complex audio behavior.
- Blob particles
- Used to render paint.
- Video playback on materials
- Added support to render Bink Video in-game on surfaces.
Additionally, when it comes to the console port, unlike the 
PlayStation 3 version of 
The Orange Box, Portal 2 has been properly optimized for the PlayStation 3, while also integrated with Steam (Steamworks, no longer available since 2016).
Chapters
| Portal 2 Chapters
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 The Courtesy Call |
 The Cold Boot |
 The Return |
 The Surprise |
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 The Escape |
 The Fall |
 The Reunion |
 The Itch |
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 The Part Where He Kills You |
 Co-op |
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Content
- Portal 2 (
portal2) - Peer Review DLC (
portal2_dlc1) - PETI DLC (
portal2_dlc2) - Portal 2 engine branch
Gallery
System Requirements
Last updated: February 14, 2023
 Windows |
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|---|---|---|
| Minimum | ||
| Operating system (OS) | 7, 8, 8.1 (with limitations due to Steam EOS)* 10, 11 |
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| Processor (CPU) | Intel Core 2 Duo or similar AMD CPU with Dual core AMD Athlon 64 X2 |
|
| System memory (RAM) | 2GB | |
| Hard disk drive (HDD/SSD) | 15 GB | |
| Video card (GPU) | AMD/ATI Radeon X800 Nvidia GeForce 7600 Intel HD Graphics 2000 128 MB of VRAM DirectX 9.0c compatible with Shader model 2.0b support |
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Note:* - This game previously used to support Windows XP & Vista, however support for Steam for these operating systems has been dropped as of 2019, and with Portal 2 having the Steam API later updated in 2021, thus these operating systems are automatically no longer supported from running Portal 2. Additionally, Windows 7 and 8, 8.1 support for both Portal 2 and Steam has been dropped in 2024, which may cause the game to be not launch correctly if the Steam API was updated and made incompatible for these operating systems.
