@frank-0 the original pi3b is slightly slower than the pi3b+ but on my older pi3b I managed to get the CP System III games working on fbneo. That emulator was built with the capcom games in mind I believe.
Also pro tip, of you're playing street fight 3 2nd impact play it in wide-screen! One of the few arcade games that has that ability natively.
one thing, on Linux Xubuntu in Retropie they still have that old yellow font displaying the retroachievements. no fancy border around it or even a small window displaying your achievement.
I know everyone has a lot to do, and i am grateful for all work being done on retropie,but it looks really beta.
Well, all is well. It worked and worked perfectly. The saved games were there and ready to go. They loaded and played without issue, though it's a bit different playing them on the Zero than it is on the 3 B+, of course. Lower resolution and the startup takes a bit longer.
Right now I'm updating Emulation Station so that I can get the scraper working properly, which went fairly quickly with the Pi 3 B+, but is taking forever with the Zero. It's chugging along, though.
Thanks for you help, everyone. I truly do appreciate it. :)
@Dominus yes. Google things like "retropie doom" and it tells you about replacing the wad file. Googling the others will tell you how to do it for quake and duke nukem 3d and wolfenstenstein 3d/spear of destiny. Plus tons of other doom engine/mods are explained how to do in the doom wiki