a Silver game
his good future is the hub world
portals appear to take us to stages in the past where we must complete the goal to return to the future
if some side goals aren't complete, the future begins to deteriorate
completing the main goals beats the game but making sure the future doesn't deteriorate at all 100 percents it (portals remain until each location is 100%)
could also have side quests to do in the hub world
maybe have Shadow in the hub world to dispense advice as Silver's mentor
















