A holodeck training programme written by Tuvok early in Voyager's journey, depicting a Maquis mutiny led by Chakotay, which the crew later rediscovered and treated as a holonovel.
Insurrection Alpha was created by Tuvok as a tactical exercise for his security staff at a time when he thought a Maquis uprising possible. As the crews merged he abandoned it unfinished and deleted it, or so he believed.
In the Voyager episode Worst Case Scenario, B'Elanna Torres finds the programme in the database. Players take the part of an officer invited to join Chakotay's mutiny, and it becomes hugely popular. Tom Paris sets about writing an ending, and Tuvok reluctantly agrees to help.
When they open the narrative files they trigger a trap left by Seska before her defection, which rewrites the story to kill them. The crew save the pair by altering the programme from outside.