In 10 Billion Years Time

An OST for a JRPG game about a boy getting sent 10 Billion years into the future, working his way through enemies and traveling 10 billion years into the past to gather the key to finally face entropy.  In Ten billion years… the sun is massive… water is rare… people are bitter… ten billion years ago, the planet was lush and full of forests and there where no humans yet to walk the earth.  The Game features 3 different endings: Good Ending (defeat entropy, the future becomes like our present in terms of climate and wildlife), Bad Ending (Lose to entropy, the sun finally goes supernova), Denialism Ending (refuse to fight entropy, and instead relive the same second over and over by shattering your Time Machine while time traveling).