Plot: Thinking with Time Machine is a single-player mod for Portal 2 developed by Stridemann, and released by SignHead Studio. It was initially released to Steam on April 18, 2014, for Microsoft Windows, OS X, and Linux systems, available freely to users who own Portal 2 on Steam. Wikipedia
Plot: Thinking with Time Machine is a single-player mod for Portal 2 developed by Stridemann, and released by SignHead Studio. It was initially released to Steam on April 18, 2014, for Microsoft Windows, OS X, and Linux systems, available freely to users who own Portal 2 on Steam. Wikipedia
Plot: Aperture Tag: The Paint Gun Testing Initiative is a 2014 first-person puzzle-platform video game developed by the Aperture Tag Team. Originally made as a mod of Valve's Portal series, it was released on July 15, 2014. Wikipedia
Plot: Portal Stories: Mel is a single-player mod for Portal 2 developed by Prism Studios. The mod was released on June 25, 2015, for Microsoft Windows, OS X and Linux systems, available freely to users who own Portal 2 on Steam. Wikipedia
Plot: Portal 2 is a puzzle-platform game developed by Valve. It was released in April 2011 for Windows, Mac OS X, Linux, PlayStation 3, and Xbox 360. The digital PC version is distributed online by Valve's Steam service, while all retail editions were distributed by Electronic Arts. Wikipedia
Plot: Half-Life 2 is a 2004 first-person shooter game developed and published by Valve. Like the original Half-Life, it combines shooting, puzzles, and storytelling, and adds features such as vehicles and physics-based gameplay. Wikipedia
Plot: Half-Life is a series of first-person shooter games developed and published by Valve. The games combine shooting combat, puzzles, and storytelling. The original Half-Life, Valve's first product, was released in 1998 for Windows to critical and commercial success. Wikipedia