An update has been released for Portal 2.
Improvements:
- Implemented a Vulkan render backend (currently accessible through the -vulkan command line parameter).
- Improved compile time for Perpetual Training Initiative puzzles.
- Improved advanced video settings descriptions.
- Made the game Hi-DPI aware.
- Smarter default video settings.
- Improved resolution of player avatars throughout the game.
- Players can now be invited to play co-op on controller.
- Button text contrast and padding has been improved when using a controller.
- Implemented a 360 Spin action.
- The portalgun is now correctly affected by dynamic lights (projected textures) in the scene.
- Improved client-side prediction for coop play.
- Added the ability for workshop levels to pack particles into their map with a particles/map_manifest.txt
- Misc. rendering optimizations.
- Added an icon to the game on Linux.
- Removed the "Trading Coming Soon" button.
Bug Fixes:
- Fixed a crash on startup that could happen on Linux.
- Fixed a crash that could occur in some community test chambers using BEEMod on Linux.
- Fixed the credits being corrupted on Linux.
- Fixed the intro videos for acts 2 and 3 not playing on Linux.
- Fixed the game starting in the top left corner of the screen on Linux.
- Fixed a crash in the PeTI if you placed a light strip above a laser catcher on the floor and linked it to a fizzler.
- Fixed the fizzler not playing the retract animation when turned off in new PeTI maps.
- Fixed being able to copy 'uncopyable' items in the PeTI leading to invalid/broken levels.
- Fixed some items in PeTI not maintaining their portalability state when expanding the chamber boundaries.
- Fixed a crash if PeTI avatars could not be retrieved.
- Fixed Cave Johnson's lines not progressing when playing queued workshop levels.
- Fixed a memory leak that could occur when changing levels.
- Fixed a bug where you could no longer ping/taunt via mouse/keyboard if you have ever used a controller.
- Fixed the ping menu being visible when quick pinging on controller.
- Fixed the game instructor not respecting input types for respective players in split-screen mode.
- Fixed rumble not being respected for respective players in split-screen mode.
- Fixed the wrong avatar being used if playing coop after playing a workshop level.
- Fixed the OnFiredPortal2 output not firing.
- Fixed some text being duplicated on the screen multiple times.
Portal 2
Valve
Valve
2011-04-18
Action Adventure Singleplayer Coop
Game News Posts 41
🎹🖱️Keyboard + Mouse
🎮 Full Controller Support
Overwhelmingly Positive
(336749 reviews)
http://www.thinkwithportals.com/
https://store.steampowered.com/app/620 
The Game includes VR Support
Portal 2 linux content [76.46 M]
Portal 2 Sixense MotionPack
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 to think cooperatively.
Product Features
- Extensive single player: Featuring next generation gameplay and a wildly-engrossing story.
- Complete two-person co-op: Multiplayer game featuring its own dedicated story, characters, and gameplay.
- Advanced physics: Allows for the creation of a whole new range of interesting challenges, producing a much larger but not harder game.
- Original music.
- Massive sequel: The original Portal was named 2007's Game of the Year by over 30 publications worldwide.
- Editing Tools: Portal 2 editing tools will be included.
- OS: Ubuntu 12.04
- Processor: Dual core from Intel or AMD at 2.8 GHzMemory: 2 GB RAM
- Memory: 2 GB RAM
- Graphics: nVidia GeForce 8600/9600GT. ATI/AMD Radeon HD2600/3600 (Graphic Drivers: nVidia 310. AMD 12.11). OpenGL 2.1
- Storage: 8 GB available space
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