This is a tech demo. Epic will be able to demonstrate their engine more effectively in a familiar genre. If they were to showcase this using a completely origin

This is a tech demo. Epic will be able to demonstrate their engine more effectively in a familiar genre. If they were to showcase this using a completely original game genre concept it would distract from where the focus should rightly be, the pretty graphics. As far as I know, this is not a game that's being developed or released. If you are not interested in 3rd person action games, don't buy them.