Warhammer 40,000: Inquisitor – Martyr is an action role-playing video game developed and published by NeocoreGames for Microsoft Windows on June 5, 2018, for the PlayStation 4 and Xbox One on August 23, 2018, and for PlayStation 5 and Xbox Series X/S on October 27, 2022. It takes place in the setting for the wargaming franchise Warhammer 40,000 created by Games Workshop. The gameplay uses a top-down camera and focuses heavily on action, both melee and ranged, it has a leveling system and different playable character classes. Based on this, the game has been frequently compared to Diablo. The game uses a cover system for both the players and enemies, and features destructible environments. The game can be played both solo and in co-op. There are four playable classes in this game: the Psyker has powerful area-attack and debuff spells; the Crusader is slow but heavily armored; the Assassin is fast and deadly but lightly-armored; and the Tech-Adept (expansion only) summons robotic minions to fight alongside him.