Total War: Warhammer 40,000 is built on Warcore, Creative Assembly's new engine. Warcore was designed with console hardware in mind from the outset rather than the game being ported after the fact - a first for the Total War franchise, and what allows the simultaneous PS5 and Xbox Series X|S launch. Creative Assembly has also said the engine is intended to scale Total War's demanding simulations down more gracefully on lower-spec machines, though this remains unverified ahead of release.

As of August 2026, the only requirements Creative Assembly has published are the operating systems: Windows 10 64-bit as the minimum and Windows 11 64-bit as the recommended. The remaining specifications have not been announced, which is unsurprising given the game has no confirmed release date.