You are Chell, a test subject in the lab. You’re here to be part of the experiments, which are all about instant travel devices. Your task is to pass every room of the facility, solving puzzles and fulfilling the GLaDOS’s orders. 

You’ll meet different challenges in every room. In some of them, you’ll be faced with puzzles and block games. In others, you’ll need to collect items and use them to solve puzzles. 

You’ll be forced to move fast, pay attention to the environment, and solve puzzles, all in the span of a few minutes.

The game is a silent template for your adventures. The story is linear and follows a certain plot.