The new iPhone X features a sensor called the TrueDepth Camera. It can sense the shape and distance of objects nearby, even in pitch black. Though initially built for detecting your face for security reasons, some enterprising developers have used it to create a game. Rigel Benton, Kenny Bier, Kaci Lambeth, and Jeff Arthur worked together at the VR Austin Jam 2017 to create a Star Fox themed game over the course of a couple days.
In the game, your move your face and change your expression to control the on-screen Andross face, locked in battle with an Arwing. You aim by turning your head. Open your mouth to fire polygon blocks at the Arwing, and closing your eyes makes the Arwing's laser fire pass through you without damaging you. Both you (Andross) and the Arwing have a health bar, so whoever's shield gets depleted first is the loser.
Check out the Project Site for screens and a download of the code for the game. With a little programming skill and an iPhone X, you could run their game on your own hardware.