These are the games available for linux i used to play
- GTA Vicecity Linux native version https://archive.org/download/gtavc-linux/GTAVC_linux.tar.xz
You can download roms especially pokemon red and pokemon emerald are good
- Pokemon fire red
- Pokemon emerald
I found that installing the following emulator is pretty easy than above
mGBA is a new generation of Game Boy Advance emulator. The project started in April 2013 with the goal of being fast enough to run on lower end hardware than other emulators support, without sacrificing accuracy or portability. Even in the initial version, games generally played without problems. mGBA has only gotten better since then, and now boasts being the most accurate GBA emulator around.