Thinking with Time-Machine is an action game developed by Stridemannn and released on Mac OS, Microsoft Windows. Deep within the facilities at Aperture Science lies a secret research laboratory that was locked and closed off... until it was found by robots. Thinking with Time Machine is a Portal 2 mod in which you will find and use a Time Machine to create a twin of yourself from the past to help you solve the puzzles. The past self accurately repeats all of the player's actions, creating a unique twist on familiar Portal game mechanics.