Portal

Main Information:
Game name: Portal
Ganre: PC Games, Puzzle
Developer: Valve
Release date: 2012
Interface language: EN / Multi
Voice language: EN / Multi

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 game is designed to change the way players approach, manipulate, and surmise the possibilities in a given environment; similar to how Half-Life® 2s Gravity Gun innovated new ways to leverage an object in any given situation.
Players must solve physical puzzles and challenges by opening portals to maneuvering objects, and themselves, through space.

CPU: 1.7 GHz Processor

RAM: 512 MB

OS: Windows 7 (32/64-bit)/Vista/XP

Video Card: DirectX 8.1 level Graphics Card (Requires support for SSE)

Free Disk Space: 5 GB

Recommended System Requirements

CPU: Pentium 4 processor (3.0GHz, or better)

RAM: 1 GB

OS: Windows 7 (32/64-bit)/Vista/XP

Video Card: DirectX 9 level Graphics Card

Free Disk Space: 5 GB

Note:

When launching the game, it gives out "no permissions to run portal", what's wrong?

You need to turn off Steam before launching Valve cracked games.