As you start playing there doesn't seem to be much of a story. A few philosophical messages left behind by the Sign Painter and a cut-scene here or there. But as you progress through the game you unearth different details about a slightly disturbing world.
World of Goo is pleasing to look at. Most of the time it's very colorful and joyful, but it changes from time to time to reflect different parts of the world. Nevertheless, it is stylistically well presented throughout the game.
Portal has won multiple awards for innovative design. Using a first person view and portals that allow one to traverse a room through one placed in one location to the other placed in another location to solve puzzles was and still is a very unique game design.
GLaDOS, or Genetic Lifeform and Disk Operating System, is the main antagonist of Portal games. She is voiced by Ellen McLain with the voice later processed to sound closer to how a text-to-speech program would synthesize a voice. GLaDOS initially functions as a guide to the player and is only lat...
The physics engine does a reasonably accurate job of replicating the fundamentals behind both orbital dynamics and rocket design, so by going through the tutorials and experimenting, you're actually learning some real rocket science.
The game's core mechanic is about traversing levels using wall-jumps, rolls and slides without losing momentum. It does a great job of creating a fluid sense of motion that you have complete control over.
The soundtrack's spacious ambient texture coupled with electronic beats and synthetic sounds supplement the game's otherworldly, contrasting setting. The complete soundtrack is available with the purchase of the game.