This seems like a silly complaint to me. Epic's engine team isn't the one coming up with game mechanics - that's largely up to teams actually making games. Unre

This seems like a silly complaint to me. Epic's engine team isn't the one coming up with game mechanics - that's largely up to teams actually making games. Unreal may have some functionality related to commonly implemented mechanics but anything truly unique isn't coming from the code in a generic engine anyway - it's coming from the studios building on top of it. This is a demo showing off tech. Any "game" that exists in the demo is purely to sell the realtime aspect and making it in a familiar environment or with familiar mechanics is just to show how the tech might be implemented in an otherwise known area.