The game is a survivors-like roguelite, a genre popularised by Vampire Survivors in which players fend off ever-growing enemy swarms and build escalating weapon combinations. Auroch Digital, the studio behind Warhammer 40,000: Boltgun, developed it in partnership with poncle, the maker of Vampire Survivors, and it spans both Warhammer 40,000 and Warhammer: Age of Sigmar.

The roster includes Malum Caedo from Boltgun facing Tyranid swarms, and Age of Sigmar's Neave Blacktalon and Gotrek Gurnisson against the Skaven. Weapons range from the Boltgun and Astartes Chainsword to a pot of Citadel Nuln Oil, with unlockable characters, weapons and relics carrying over between runs. A demo is available now on PC.