I'm dipping back into my old "Cave Game", and I have a bit of a dilemma. It's your standard Metroidvania with a single fixed screen for each room. The first step of design is figuring out the best dimensions for each room, but I can't decide whether to make the width and height of it exactly the dimensions of my 16:9 monitor for maximum size at fullscreen, or to pad it on the border so it ends up being less wide. Would it be disorienting to play a single-screen game where the level is right up against the sides of the screen?
This is what I'm talking about:
VS. something akin to this,
The character is supposed to be 3 squares-tall.