duckstation : Fast Sony PlayStation (PSX) emulator ( https://github.com/stenzek/duckstation )
flycast : Sega Dreamcast, Naomi and Atomiswave emulator ( https://github.com/flyinghead/flycast )
mupen64plus-qt : A basic launcher for Mupen64Plus ( https://github.com/dh4/mupen64plus-qt )
np2kai : NP2kai is an emulator for the japanese PC-98 series of computers ( https://domisan.sakura.ne.jp/article/np2kai/np2kai.html )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a guru
For Paludis use this rsync : rsync://gentoo.zugaina.org/guru-portage
If you have a problem : ycarus(-at-)zugaina.org