Time Travel is a daunting mechanic for any GM to attempt to incorporate in their game. While using time travel as a platform for historical settings and conflicts can be fun, eventually your players are going to ask “wait, what happens if we show Beethoven a recording of his Fifth Symphony before he writes it?” or, even more problematic, “can I go kill my grandfather?” These are questions which, for the sake of the integrity of the concept, can’t be left completely unanswered (though you can probably tell the player trying to kill his own grandfather to drop it before something bad happens). The good thing is that time travel as a game concept leans heavily on improv, and does so in a way that can be very helpful with developing your improv muscles in a fun, non-game breaking way. That’s because with time travel, you can come up with whatever consequences you want…the players already have the mechanism to fix it.

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