Here is an Idea, Make a modern type story game. Maybe about a new society that is trying to eradicate the whole human population. Maybe you could have two options, to join said crew, or survive the new killing society. Don't be afraid to break the fourth wall in the process,( As an extra Idea bonus Idea maybe It could take the reader along in the ride, First person instead of third.)
I Know I have told everyone this, But if you don't like this idea that make sure you tell me and I can give you a refund.