@Folly @sleve_mcdichael Alright, it's done. I present to you the script to load games based off of their filenames. This is the version I have, and it works very well. The selection is limited, but the good news is you can select for yourself what file types are supported. Have fun!

#!/bin/bash rom="$1" if [ "${1: -4}" == ".chd" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ psx "$1" elif [ "${1: -4}" == ".bin" ] || [ "${1: -3}" == ".md" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ megadrive "$1" elif [ "${1: -4}" == ".nes" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ nes "$1" elif [ "${1: -4}" == ".smc" ] || [ "${1: -4}" == ".sfc" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ snes "$1" elif [ "${1: -4}" == ".z64" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ n64 "$1" elif [ "${1: -4}" == ".gba" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ gba "$1" elif [ "${1: -4}" == ".zip" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ mame-libretro "$1" elif [ "${1: -3}" == ".gb" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ gb "$1" elif [ "${1: -4}" == ".gbc" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ gbc "$1" elif [ "${1: -4}" == ".fds" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ fds "$1" elif [ "${1: -4}" == ".nds" ] then /opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ nds "$1" fi

Trouble using EmulationStation Scripting