If you need a recommendation, the screenpack is a top-tier choice designed specifically for 640x480. It includes: Original logos, intros, and "Game Over" screens. Custom lifebars tailored for the resolution. Optimized performance for both MUGEN 1.0 and 1.1.
All of these are designed explicitly for and a 640x480 base resolution . mugen 1.1 screenpack 640x480
At 720p, the math breaks. The delta values (layer scrolling speed) don't scale correctly unless you manually edit every stage file. If you need a recommendation, the screenpack is
The primary advantage of the 640x480 resolution is backward compatibility. The vast majority of characters created for M.U.G.E.N (ranging from the WinMUGEN era to early 1.0 releases) were designed for 320x240 or 640x480 resolutions. If you need a recommendation
Move the screenpack folder into the data directory of your MUGEN 1.1 folder.