Flying Mollusk’s horror game Nevermind is built to be played with biofeedback technology that is able to detect how stressed and scared you are while playing it. When it reads that you’ve become anxious, it then dynamically responds by changing parts of the game, meaning that you get a unique experience depending on your reactions to it.
This biofeedback also has a tenuous relation to the game’s plot. In Nevermind, you play a Neuroprober, who is said to be a physician that can use technology to venture into the minds of psychological trauma victims for who traditional treatment methods have proven ineffective.
This is why the game’s environments seem to be alive; they’re supposed to be the convolutions of someone’s mind. And, if you’re using the biofeedback scanners, then in some part it’s your mind that’s affecting them. And the result looks both creepy and terrifying: dark corridors warp into liquid spirals, huge pallid and agape faces decorate walls, and dim spaces filled with dangling body bags are eerily quiet.
Nevermind can be played without the biofeedback if you choose (or simply don’t have the equipment) and its surreal imagery seems to make it worth it even in that case, too. Currently, the game is up on Steam Early Access where you can grab it for $24.99 on Windows and Mac.