chrontraption

This Rube Goldberg contraption has a twist: it contains four time machines. Schedule the arrival of time travelling elements to create a consistent loop and avoid paradoxes.

How to play: Drag one of the 4 highlighted elements into a timeline slot (on the right column) to schedule something arriving from the future at that time. To win, create a consistent time loop, where everything received from the future is correctly sent to the past.