Therion Games

Therion Games was an independent game development collective founded in Madrid in 2017 by postgraduate students from U-tad, Centro Universitario de Tecnología y Arte Digital. The team brought together graduates and students from game design, art and video game programming programmes to develop its debut project, Greyfall: The Endless Dungeon.

Its work focused on an isometric rogue-lite action RPG built around player control over both dungeon layouts and character progression. Drawing on combat influences from Dark Souls and Diablo, Greyfall combined action encounters with a dungeon-building system. Players arranged grid-based room pieces before entering the dungeon, shaping their route, encounter difficulty and potential rewards. Skill trees, perks and hero development complemented this approach to constructing an adventure.

The project progressed through public demonstrations and several years of development. During its 2019 production phase, the team refined interfaces and progression systems. On September 17, 2020, it released a free downloadable vertical slice for Windows under the title Greyfall: The Endless Dungeon - Chapter 1. This release represents the collective's documented game credit rather than a broader catalogue of commercial productions.

Therion Games operated as an unincorporated student and indie project team. Following the September 2020 release, active development ceased and the collective disbanded as members moved into professional roles elsewhere in the games industry.