It’s recently been confirmed that Demon Slayer is getting not one, but two new games — one for PlayStation 4 known as Demon Slayer: Hinokami Kepputan, and one for smartphones, Keppu Kengeki Royale. Hinokami Kepputan is being developed by CyberConnect2, and appears to be a game in the vein of the old Ultimate Ninja Storm titles rather than an RPG in the vein of Dragon Ball Z: Kakarot.
The mobile game is being described as a battle royale title in which players fight as members of the Demon Slayer Corps or as demons. Keppu Kengeki Royale is supposed to release for iOS and Android sometime in 2020.
As for the PS4 title, it is scheduled for a release in 2021.