Portal

Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.

The 'Perpetual Testing Initiative' has been expanded to allow you to design co-op puzzles for you and your friends!

The 'Perpetual Testing Initiative' has been expanded to allow you to design co-op puzzles for you and your friends!

Solve puzzles by creating portals and manipulating time. Inspired by Valve's Portal and Portal 2.

Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.

3D platformer with a portal gun! Solve puzzles, exciting levels, become a master of portal travel.

Immerse yourself in the multidimensional universe of Desordre. Solve intricate puzzles, push the boundaries of 4-dimensional thinking. Get ready for a unique experience where reflection takes on a whole new dimension

1998. HALF-LIFE sends a shock through the game industry with its combination of pounding action and continuous, immersive storytelling. Valve's debut title wins more than 50 game-of-the-year awards on its way to being named "Best PC Game Ever" by PC Gamer, and launches a franchise with more than eight million retail units sold worldwide.

Portal Mortal is a hardcore 2D puzzle platformer spiced with blood and guts! Explore unique environments, face challenging obstacles and get creative. Play alone or have fun online with up to 32 friends and build your own levels together!

Welcome to Gravulse, an innovative space curvature laboratory that is trying to 'flip' the laws of physics, literally. Here you have to go through many test levels using various new technologies!

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. For more information on Portal 2 click here.

This game introduces portals to the classic box-pushing game! With the addition of portals, problems that were impossible in the ordinary box-pushing game become possible. Let’s explore this wonderful box-pushing game together!

Portal 2 Sixense Perceptual Pack is a free stand-alone game, developed with the Intel Perceptual Computing SDK, custom-designed for exclusive use with the Creative Senz3D depth and gesture camera, which is required to play this title. Portal 2 is not required to play Portal 2 Sixense Perceptual Pack.

Darkness. Falling. Light. A metallic, geometric cavern surrounds you. A single source of light beckons you forward, up – towards the only exit.

Change the direction of gravity to survive and navigate the Labyrinth.

Sand flows and portals glow in this one-of-a-kind puzzle adventure

VITAL is a first person puzzle platformer taking place in a dream world. You have no idea where you are or how you got there. The only thing that is certain is that someone or something doesn't want you to wake up. Explore the mind of a fragile individual and solve physics-based puzzles.

A science fiction game of leisure decryption type

Defy Gravity is an action platformer that is a mix between classic platforming and gravity based puzzle solving.

Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life: Source is a digitally remastered version of the critically acclaimed and best selling PC game, enhanced via Source technology to include physics simulation, enhanced effects, and more.