Solo developer Stephen Ddungu believes Disney and Marvel likely copied his indie game for an eye-catching fight sequence in the recent Doctor Strange in the Multiverse of Madness.
Ddungu has been chronicling his work on music-based JRPG Sword of Symphony via Tiktok, where footage of the game's combat system has notched up millions of views (thanks, Kotaku).
His game allows you to conjur glowing musical notes in mid-air and send them flinging towards an enemy. If you've seen the new Doctor Strange, you'll likely recognise that description - since a short sequence in the film sees Benedict Cumberbatch doing just that.