Portal: Still Alive features the full award-winning Portal single player game from Valve, plus a new challenge mode.
Break the laws of physics using "portal" technology to solve puzzles and survive in this darkly comic story weaving adventure with brain-bending puzzles.
Your goal is to find a way throughout the game for exiting each room without hurting you by using the Portal Gun, which can create two portals and help you to find a way if you can't advance. By using it, you can modify the way of an energy ball, make cubes going to impossible places or even make high and fast jumps by creating several portals when falling.
- Innovative gameplay: Experience the first first-person puzzle-action-adventure game with hours of single player gaming.
- Extras: The game includes fourteen brand new bonus puzzles to challenge even the most skilled test subjects. And, get a glimpse into the making of Portal: Still Alive with commentary from the developers.