Theoretically I can add an option invert the width/height resolution values if that offers any kind of solution. There's also an AUTO resolution setting, which might work with a flipped display. Gonna test that.
Much appreciated. If I'm understanding what you mean by inverting, would the arena + UI end up with borders on all four sides? That would work if you have monitor that allows zooming, but they're fairly rare.
The auto resolution setting actually works when my system is in portrait mode, but it scales the height (290 pixels at 1X), which happens to more or less work with a 4:5 display, but probably no other aspect ratio. The question is whether you can eliminate the pillarboxing in tate mode, as Downwell does. Then
, get the auto resolution to scale by width (240 pixels at 1X).
As a side note, I've managed to get the exact same arena/enemy configuration twice in a row a few times. Is that something you can trap for?