Thinking with Time Machine

Thinking with Time Machine is a Portal 2 modification featuring a new gameplay element known as the "Time Machine" which allows the player to record and play back their actions in the game world.

Mechanics

 * "Time Machine" device
 * Accurately recreates the player's actions. Activated by hitting the R (default) key, then the Q key to stop. The F key activates the mechanic and enable the Machine to start replicating the actions.