A bit late - but I have had great success with Batocera. I have it running on a dedicated machine, but it can be run from an USB-stick.

Hehehe - apparently not consistenly anyway as I could reply to you :)

I have marked all languages in my user profile using the browser.

https://lemmy.ml/c/linux

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Your comment is not entirely correct. C# is invented by Microsoft, but today runs equally well on practically all platforms including Linux, MacOS, Windows, IOS, Android etc. It even runs as WebAssembly.