So these aren't RM examples but I think the concept is the same regardless of engine. Anyway, I recently played Axiom Verge, which is like a Metroid clone. I really wanted to like it, but found it VERY BORING. It's strange though, because it's very similar to Metroid. i.e. you have cool abilities, you run and shoot like Metroid, and you get new stuff every 5~10 minutes. It's evident that the creators of Axiom Verge know the Metroid "playbook" very well and copies it perfectly. Yet Axiom is boring (to me anyway. I'm sure there's people who love it.) and Metroid is not. Another example is I played Hollow Knight. And that is very interesting. But what I can't explain is why are Metroid and Hollow Knight very interesting while Axiom is not? On paper they all seem to follow the same formula and mechanics. What do you think makes a game boring even if it follows a successful formula?