My college roommate had this little box that had 2 controllers and RCA’d into the TV that contained basically every game from the most important retro consoles. All the important consoles and games pre y2k. Including Nintendo, Atari, Sega, and maybe some arcade. I assume I can’t get it through normal channels because of some of those roms are unsanctioned, but where might I get something like that? Thanks!
Buy an nvidia shield. Install retroarch. Find ROMs and put them on a USB drive, plug into shield. Pair any Bluetooth controller(s?). Play all the games.
It’d be less than half the price to buy a Raspberry Pi 4 and you can even get a custom case.
I’ve done both. The shield is both MUCH MUCH MUCH easier to setup and is so much more powerful than the Pi that N64, PS1, and GameCube Games are more likely to play well. OP didn’t mention being on a budget. They also didn’t mention their Linux skill level. Given thosee facts the shield is worth the price difference. They’re not really saving money if they can’t get the Pi working.