What it is
MOURNVEIL is a 3D action game by Japanese creator かっちゃん堂 (kacchandou, itch.io account Kacchyan) that runs in the browser. You play a magical girl who fights ghosts with candy across six arena chapters while keeping a gauge in check. The creator says OpenAI tools helped with code, writing, procedurally generated assets, synthesized audio and documentation; the heroine's model was supplied by the creator and then adapted. The creator doesn't name a specific model.
Who it's for: Players who like magical-girl stories and arena fights that also ask you to manage a resource.
Before you start: It runs in the browser. Mobile support isn't stated. The creator provides guides in English and Japanese; the full language list for in-game dialogue isn't given. Checkpoints are saved in the same browser, and clearing browser data deletes them. The page shows only a cover image, so in-game visuals aren't described. It's free to play. The creator keeps copyright and explicitly does not allow redistribution or commercial use. No age rating is given.
Based on the game page's public information. Not tested by AI Inspiration World.