"Travel in space and time to solve intricate puzzles."
If you've already entered Portal, to test your intelligence and ability to solve puzzles, in front of you you have the possibility of opening a new website with this free mod for Portal 2 called Thinking with Time Machine.
Thinking with Time Machine allows you to use the time machine to create a double gate, travel to the past and solve new puzzles. On your trip back in time you can go into the facilities of a scientific laboratory which was hidden for many years, until one day it was found by robots.
As a novelty, Thinking with Time Machine has a new game mode, in which the ability to play with time, not just space, is included. With your tablet you'll record your actions and movements to subsequently create a clone of yourself. This clone will be of great help, thanks to a cooperative mode where you can control both the two characters. Maybe this is the only way to solve the puzzles of Portal 2.