Abstract: A method of simulating an emergency response training scenario to users in different locations, including customizing a scenario, initiating a game state having a threat level and a time remaining, assigning a role to each of a plurality of users wherein each of the users uses a device, assigning digital assets within the scenario to each of the users, displaying an introduction sequence, initiating an incident and simultaneously notifying a first group of at least two users, logging and scoring a chosen response from the possible responses compared to a scoring system, updating the game state whereby the threat level is raised or lowered and the time remaining is increased or decreased, triggering another event to at least two of the plurality of users, and communicating a score calculated in the logging and scoring step to at least one user on one of the at least one client device.