Steam: 50% off every hex for Warhammer 40,000: Armageddon
The venerable Warhammer 40,000 setting has seen many iterations over the years, with varying degrees of adherence to the tabletop game and its lore. WH40K: Armageddon is one of those instances, in which a game endeavours to capture the essence of what 40K is, with the aid of the good old proven hex-grid. There have been others of course, such as Rites of War - chief among its predecessors. In a similar fashion, Armageddon gets it right.
A fairly large number of DLCs for the game have come out since its release in November 2014, mostly adding new missions and campaigns and new fieldable armies to the core game. Slitherine Software, which specialises in turn-based strategy, has made sure Armageddon stays fresh and up to date over the past years.
The game and its accompanying DLCs are on sale, over at Steam, during this weekend. You can also grab the standalone expansion Da Orks if old-school hex-based strategy is your thing, and if you feel more at home in a proper Waaagh!!!, rather than fighting for The Emperor.