Proteus is an experiemental game that examines the relationship between the visual and auditory environment. IE: Your background music is based on what things are around you.
What that means:

• Every rendered object has an area of effect melody
  
• Your proximity determines volume of said melody;
  
• It's easy to be overwhelmed by the ruckus.

But:

• Despite exploration being the focus of the game this is poorly designed. The forward movement button actually moves about 15-45 degrees clockwise, depending on your resolution;
  
• In fact, the game has trouble handing different resolutions at all. If you find you're not getting the entire picture try opening in the forced windowed option;
  
• The visual elements, while not a focus, are inexcusably poor. Nearly everything in the game lacks definitions to the point where players are often left without any indication of what it is they're looking at.

So:

• This game really lacks the ability to be immersively played. Most reviews list that it is best enjoyed with narcotics. I neither condone, nor condemn this statement;
  
• If you are interested in the experiment, simply be prepared for the inoperable controls and confusing landscape.

Successes Nonetheless:

• The palette is dreamy;
  
• The excitement of recognizing a melody, or searching for and finding one is real.;
  
• If you have an ear for these things the journey is real.

Ultimately:

• I can't recommend this game; because while it is a success in terms of its experiment it is not a success in its playability.