Hellblade: Senua's Sacrifice - Early Prototype and Beta Gameplay
305Gameplay and trailers of the early development stages of Hellblade.
Wikipedia:
Hellblade was announced for the PlayStation 4 at Sony's Gamescom media briefing on August 12, 2014, where a trailer was shown. In a joint statement, Ninja Theory described the game as "an experience focused on delivering a deep character in a twisted world, with brutal uncompromising combat", and stated that they wanted to "make a smaller, more focused game experience that is uncompromising in its combat, art and story". The developers called it an "independent AAA game", with their goal being to make a game with all the qualities and production values of any AAA game on the market, but with creative freedom and an "indie spirit". The team eventually succeeded in releasing the game independently, but to achieve this could only release it via digital distribution.
Hugues Giboire, art director of previous Ninja Theory game Heavenly Sword, returned to work on the game. A Microsoft Windows version of the game was announced on January 9, 2015. The game is powered by Unreal Engine 4, and was made by Ninja Theory with a team of around twenty developers. Its subtitle, Senua's Sacrifice, was announced in March 2016.
Source: https://www.youtube.com/user/OfficialNinjaTheory