3 Feb 2022, 10:16

@rustymg iam not familiar with mame, but in the documentation is the standard mame Core the LIBRETRO-MAME 2003-Plus and your Romset should match with one of these ROMSET MAME 0.78-0.188

Have you create for the MAME2010 and 2015 Roms subfolders?

https://wiki.recalbox.com/en/emulators/arcade/mame/libretro-mame-2015

📁 recalbox
┃ ┣ 📁 share
┃ ┃ ┣ 📁 roms
┃ ┃ ┃ ┣ 📁 mame
┃ ┃ ┃ ┃ ┣ 📁 Mame 2015
┃ ┃ ┃ ┃ ┃ ┣ 🗒 game.zip
┃ ┃ ┃ ┃ ┃ ┣ 📁 game
┃ ┃ ┃ ┃ ┃ ┃ ┣ 🗒 game.chd