Gameplay - in the game you will need to complete levels by solving puzzles. To do this you will have to use portals. You will have a portal gun with which you can place 2 different portals and pick up items.
Musical accompaniment and voice acting - everyone has different tastes, but I will tell you that it is at its best) I remember the final music forever... You will definitely want to replay this game many times.
The story is the most memorable part of this game. You are a test subject in the role of a girl, you wake up in a small room with absolutely nothing. You have complete memory loss and the first character you meet is Whitley. He will become your friend. Then you and he will get out of there and meet an antagonist named Glados... This is a huge robot that will give you puzzles.
The game is worth the money. I definitely recommend purchasing)))