10 Incredible Games With Only ONE Mechanic

The hallways of gaming history are littered with gameplay gimmicks that fell flat on their faces and proved that controllers/mice and keyboards will never be beaten. Even beloved consoles like the Nintendo Wii eventually bowed out of efforts to make motion-based gameplay a "thing". That's what makes Before Your Eyes such an anomaly, as its gimmicky central mechanic actually pays off perfectly and enhances the entire experience. 

This unique game is controlled through your eyes, which are tracked via webcam. Gameplay-wise, this works surprisingly well, as you blink to interact with things or to skip into a different place and time whenever a metronome appears. However, the game isn't incredible just because of this impressive yet simple gameplay; it's the narrative that really sells it. 

Before Your Eyes tells a beautiful story about a deceased person's reflection on their life. It explores profound topics like illness, legacy, hope, struggle, and more. As should be obvious, the game's a real tear-jerker, which is almost rude, given that your eyes are pretty vital to play. The devs making you cry here is like pouring glue onto your controller.