This is a portal 2 mod called "Aperture Recall Part 1"
Hello Portal 2 fans! I have been very eager to share this test mod with you all! As you can tell, this is only part 1, part 2 will take a long time due it being way longer of a game. Part 1 is only 1 map big while part 2 is hoping to be 10+.
So basically, you find yourself awoken in a Relaxation Chamber, all you can do is find your way out, you have to find your way out by solving moderate challenging puzzles.
Again this mod is not very big, part 2 will be way better and longer.