MarsSeed [1] filed a deletion request for rgssad-bin [2]: Hit and run. @AsukaMinato just dumped and orphaned it. Also it's older than the regular AUR/rgssad package from 2020 for the same.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/rgssad-bin/