According to Ryokutya, new Demon Slayer game information has been announced in the latest issue of Weekly Shonen Jump. Ryokutya is uncertain if this information is related to DLC for an existing game or an entirely new game.

(UPDATE: It was an arcade game unrelated to Aniplex.)

There are three Demon Slayer games out now, all of which are developed by CyberConnect2 and published by Aniplex (Japan) and SEGA (worldwide):

• Demon Slayer: The Hinokami Chronicles — PlayStation, Xbox, Nintendo Switch, Steam
• Demon Slayer: Sweep the Board! — PlayStation, Xbox, Nintendo Switch, Steam
• Demon Slayer: The Hinokami Chronicles 2 — PlayStation, Xbox, Nintendo Switch, Steam

Aniplex also announced a mobile game, Demon Slayer: Keppu Kengeki Royale, in 2020 alongside Demon Slayer: The Hinokami Chronicles, before delaying it indefinitely at the end of 2020.