Ninja Theory released Developer Diary 24 for Hellblade: Senua's Sacrifice today, which focuses on the game's sound design; specifically, how they designed the voices that Senua hears in her head.

If you watch the video with headphones or surround sound, you will be able to hear some disturbing voices coming from different areas at a few points that demonstrate the mental distress that Senua is going through.

You can watch Hellblade Developer Diary 24: Hearing Voices below. Hellblade: Senua's Sacrifice is coming to PC and PS4.