Valkyrie

Valkyrie is a desktop and mobile application that lets users design, test, and share custom scenarios for the Fantasy Flight board games *Mansions of Madness* (Second Edition) and *Descent*. The built‑in scenario editor provides a visual canvas where tokens, tiles, and other game elements can be placed, and events can be attached to those objects to drive narrative and gameplay. Users can preview their creations, play them locally, or publish them for the community, with support for multiple language localizations and a feedback mechanism that lets players review completed scenarios.

The tool imports existing game data either by detecting an installed copy of the official titles or by loading a ZIP package downloaded from the provided guides. It runs on macOS, Windows, Linux, iOS, and Android, with platform‑specific installation notes such as disabling Gatekeeper on macOS or enabling unknown sources on Android. Because the application focuses on scenario creation and sharing, it is aimed at hobbyists, game masters, and fans who want to extend the replayability of these board games without modifying the core rules.