@ts-x I'd like to make it work with the images I already have, though. E.g. each DOOM expansion has its own image with screenshot and logo art from the scraper. I could put a launching.png in the ports/doom folder but they would all use the same image. Plus, I'd have to do this individually for each (group of) ports I have, and repeat it in the future any time I add a new one. The images in downloaded_media/ports/ are already there, I want to make it use them. Just can't figure out why "$IS_PORT" and pointing at the ports/ folder directly doesn't work the same way that "$IS_SYS" and $SYSTEM/ does.
Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first