Mugen 1.1 Screenpack 640x480 Link
Your screenpack must force stage resolution. Use [Files] to dictate stage.def . You need to enforce: CameraZoom = 1.0 (Default. Don't let stages override it to 1.5, or it looks like a fisheye lens). LocalCoord = 640, 480 (This is the secret sauce. It locks the stage elements to your UI space).
A frequent issue in 640x480 screenpacks involves the character select screen portraits (9000,0 sprites). mugen 1.1 screenpack 640x480
Modern HD screenpacks rely on mugen 's RenderMode = OpenGL and smoothing. They blur your sprites to hide the fact that the art was drawn for a different resolution. Your screenpack must force stage resolution
If you are running the engine (known for its improved zooming effects and smoother performance), the most balanced and widely supported resolution for screenpacks is 640x480 . This article is a deep dive into why the "Mugen 1.1 screenpack 640x480" is the gold standard, how to install one, and where to find the best options available today. Don't let stages override it to 1
: Characters can have moving "Face" files in the UI.