I'm not sure if I overlooked it in the rules, but how do you break a tie when a monster is moving to the closest investigator and two investigators have the same distance but in different directions, or if a monster attacks the investigator with the highest value of some stat and two or more have the same value in that stat?
Page 2 of the RR.
During the game, some game effects may lead to conflicts within the
game or between the investigators.
* It is possible for a game effect to have more than one possible
outcome. In such a case, investigators as a group determine the
outcome of that effect.
* It is possible for multiple game effects to occur at the same time.
In such a case, investigators as a group determine the order in
which those effects are resolved.
* It is possible that investigators have differing intentions and goals.
If this prevents investigators from reaching a decision as a group,
the decision is determined by an investigator chosen at random.