Proteus is a game of limited explanation, created by Ed Key and David Kanaga. According to the official website it [Proteus] is a game of “pure exploration and discovery…with a reactive ambient soundtrack.” Although they don’t explain to much about the game, one look at Proteus and it is obvious that their is nothing else quite like it.
Each play through will last for all four seasons of the year, causing your surroundings to constantly change around you. One of the unique parts of Proteus is that everything in the game is procedurally generated. What does that mean you ask, it means that every time you start a new game the world will be completely different. Another fun aspect to the game is everything in the world has its own musical note or instrument if you will, that will allow it “alter” the soundtrack it their own way.
Other than having a few weapons, an amazing soundtrack and being set in a “dream like world” Proteus is somewhat wrapped in shrouds of mystery. No release date or even release window yet, but we do know that when it does release it will be a Cross Buy game allowing you to snag it up for both the PS3 and the Ps Vita for one simple price.
Source: PlayStation Blog (US)