Warhammer 40,000: Conquest LCG is Fantasy Flight's 40K LCG, and the highest-regarded Warhammer card game ever produced despite a production run that ended abruptly after just two years.
The game
Designed by Eric M. Lang and released in 2014, Conquest LCG is a two-player duel fought across seven planets in the Traxis Sector. Each player builds a Warlord-led army drawn from one of seven factions (Space Marines, Astra Militarum, Orks, Eldar, Dark Eldar, Chaos, Tau) with Warlord-loyalty dividing the card pool. Combat resolves in a specific-planet initiative order, and victory requires winning the battles on the first, third, and a dynamically-selected planet.
The context
Conquest arrived at a moment when GW's own card-game efforts had all faltered, and Fantasy Flight's LCG engine was in its strongest form. The game is celebrated in LCG circles for having one of the cleanest two-player designs of the format. It ran two cycles (Planetfall, Warlord) and one deluxe expansion (The Great Devourer, which introduced the Tyranid faction) before Games Workshop revoked the FFG 40K license in 2016 and the product was discontinued mid-cycle.
The collector angle
Core Set, Planetfall Cycle, The Great Devourer Deluxe Expansion and the Warlord Cycle are the complete print. Because the license revocation was sudden, sealed boxes have been climbing in secondary-market price for a decade. The Tyranid-faction cards from The Great Devourer are the most-sought singles because the Tyranid card pool stopped expanding immediately. Unreleased third-cycle designs survive in ex-FFG designer notes and are legendary in the community but not in the wild.