Looking into their page, it gives me an impression that its doing something similar to UEFN and things like Nintendo's "game builder garage" - meaning they're trying to make game development easy by avoiding coding as a requirement.
They used trivia crack as an example, looks like it would be very good for knocking out simple games quickly - I'm thinking Facebook style games like farmville, but for any serious development or if you're looking for employable skills, you'd want to go with unity or Godot