This game has been remade, check it out:

https://lightning8113.itch.io/fpv-freestyle

VR Drone Sim

It takes forever to load, I recommend reading the instructions as you wait!

Controls (Keyboard)/Controller:

• (Q/E)/Left Stick X: Tilt Side to Side
• (W/S)/Left Stick Y:Tilt Forward/Back
• (A/D)/Right Stick X: Turn
• (Space/Shift)Right Stick Y: Altitude Controls
• (F)/Left Trigger: Reduce Motor power
• (R)/Left Bumper: Reset
• (Z)/Right Trigger: Slo-Motion
• (X)/Right Bumper: Change Camera Mode
• (Left/Right Arrow)/DPad Left/Right: Zoom (FOV)
• (Down Arrow/)DPad Down: Set still camera position
• (V)/X: Toggle Velocity Assistance
• (C)/Y: Toggle Velocity and Propellor Info
• (Enter)/A: Toggle VR
• (ESC)/B: Reset FOV

How to setup steam remote play (all you need is a phone with steam link):

1. Add your browser to steam as a non-steam game
2. connect to your computer with your phone in the steam link app
3. ALT+TAB till you're in your browser
4. Fullscreen

It may work standalone on some phones with controller support, I have no idea.