A museum of time travel
Four stories, four rules of time. In each room you break the rule with your own hands; the placard says which law of the machine agrees, and where the story parts from it.
room 1 · bttf.mjsBack to the FutureThe change reaches you late; only one timeline still sends you back.
room 2 · steins.mjsSteins;GateA small change heals itself. A few do not.
room 3 · dark.mjsDarkA loop can be consistent and have no beginning.
room 4 · groundhog.mjsGroundhog DayThe world resets each morning. Only memory carries.
The machine behind the museum: leap