I had an idea based off someone who said something about "unstable physics", and initially took him literally, before realizing that was my own unique interpretation of what he meant. My idea is: you play as a sentient virtual particle named Adam, who recently popped into existence and wants to become stable before he disappears. There are many different particles you meet along the way: Electrons can shock enemies, Photons can move quickly and emit light, gravitons can control gravity, gluons can attach themselves to walls and ceilings, inflatons can blast enemies away, and axions can become invisible to enemies and sneak around.