Future Imperfect is an expansion, it requires the Anachrony Base Game or the Essential Edition to play.
Future Imperfect is a modular expansion for Anachrony, with three new modules expanding the time travel mechanism and the player interaction.
Quantum Loops module
Intrigues of the Council module
The three modules are playable on their own, but they are also compatible with each other and most past Anachrony modules and expansions.