It’s so fluffy! But if you must print unattended*, get you a spaghetti detector cam! Your printer will stop printing within seconds to a couple minutes of something going terribly wrong.
*This still doesn’t make unattended printing safe, just slightly less wasteful.
RetroArch is super popular and available across many systems, with a bunch of open source frontends for it. I have it on a Raspberry Pi, a Mac, an OG Oculus Quest, playing everything from MAME to PSX.