The developer behind Hellblade Ninja Theory has revealed an experimental game that apparently embraces "mental terror."

Announced with a teaser trailer (below), the studio says that this game will explore "new ways of storytelling" and will attempt to recreate "the horrors of the mind as accurately and realistically as possible."

This follows the developer's 2017 release Hellblade: Senua's Sacrifice, which dealt with themes of mental health and featured a character dealing with psychosis. A sequel to that game, dubbed Senua's Saga, is on the way having been announced at The Game Awards 2019.

The original Hellblade proved that the mid-tier of development - triple-A talent with a limited budget - could really work. The game has sold more than one million units within its first year in the wild and raised $50,000 for charity Mental Health America in August 2018.

Ninja Theory revealed it was working on another project that dealt with mental health issues in October 2019, saying that the studio was once again collaborating with the University of Cambridge's Paul Fletcher. It's likely that Project Mara is part of this on-going partnership.

At E3 2018, Xbox giant Microsoft announced that it was buying Ninja Theory. The studio is also working on Bleeding Edge, which was announced at the following E3.