Well if 10% of people were developing super powers in the past 6 months. Most people wouldn't believe they existed. people who realized they had powers and could control them are either getting drunk on power or going into hiding. Others who aren't in control or don't think they have powers have things happen related to their powers under stress. They RP would revolve around characters developing their powers and choosing to either use them to the benefit of themselves or others. It would be cool if new aspects of their powers were discovered along the way like someone who realizes they can fly later learns that flying is a subset of gravity or telekinetic powers.