Shadow of the Eternals, discussing how the 'Sanity System' will work, both contrasted and compared to the original Eternal Darkness.
Developer Shawn Jackson details in the video how "sanity events - special graphical, audio, and controller effects - will challenge your senses and your mind, causing you to question what is real." In addition, sometimes going insane is the only way to get to some of the secrets.
Check out the dev diary in the video below. Shadow of the Eternals has raised around $260K with 8 days to reach $750K. Its Kickstarter page can be found .