Activation of the key in the Uplay Ubisoft Connect system. Internet access is required to play.
The key is from a Russian retail publication from the BUKA company.

This is an independent stand-alone addition to the sixth part of “Heroes”. The future of the necromancers from Necropolis and the dark elves from the League of Shadows is in your hands. Become a part of Ashan's history in two original campaigns. Master the forces of Darkness, command the dark elves and use them to capture the unconquered. The game does not require the original Heroes 6 game.