Everguild have announced that The Horus Heresy: Legions is coming to iOS and Android systems on 26 July 2018. This will be one of the first video games to even remotely feature Warhammer 40K's Primarchs and there will be more than one.
The Horus Heresy: Legion revolves around the titular Horus Heresy and will include the iconic Istvaan III Atrocity, possibly with some other battles. The game will feature distinguished leaders and other individuals from Warhammer 40K lore, such as the four tainted Primarchs - Horus, Mortarion, Fulgrim and Angron, who also appeared in Talisman: The Horus Heresy.
The picture above also shows Lucius the Eternal, in the bottom right corner, who is a legendary close quarters combatant that technically cannot die. He got this gift from Chaos God Slaanesh after he distinguished himself through massive bloodsheds. When I said "technically", it really meant he can be killed but he possesses his killer soon after.
That was the fun part, now here is the downer - you don't actually get to play any of these legendary characters, this is a card game. Players will instead spend time building decks "of unstoppable Space Marines to take part in quick, brutal online duels". Everguild, the game's developers claim that players will be able to "lead [their] Legion with warlords such as Loken, Kharn, Fulgrim and many other epic characters as "they relive the battles that tore apart the Imperium of Mankind".
Considering this will be a card game, rather than a visceral strategy in spirit of Dawn of War we all came to love, one might find it hard to believe they will get to actually relive the iconic battles. This may not be too far from the truth though, as the trailers for The Horus Heresy: Legions show some storytelling through talking sliders. It's not optimal, but at least it's not just card trading.
Come 26 July 2018. The Horus Heresy: Legions will launch with "a major content update" that will revolve around Istvan V and the Legions that were sent there to stop the Chaos tainted Warmaster Horus. If the planet's name rings a bell, but you can't quite place it - it's the place where the Drop Site Massacre happened.
Deck building will likely be done in several ways, but one could not escape my cynical sight - loot boxes. Well, it's a mobile game so everyone expected microtransactions but the screenshot above proves there will be loot boxes that may lead to brutal levels of pay to win. It's still too early to judge, but more will be known when the game launches.