ThyTTY

Unfortunately I haven’t tested it so I cannot fully advise on that but I have seen some “repacks” on the high seas where a whole wine prefix with a game already installed was compressed to a single dwar which you can mount and play with configs and saves in your ~.

There’s an interesting project called DwarFS. I have it on my todolist to check it out but as I understand it you basically create a compressed read-only archive that is mountable and readable just like any other disk - https://github.com/mhx/dwarfs . Maybe this is something for your use case?

I use an emulator from Android SDK which uses KVM as backend AFAIK. Performance is top notch and it doesn’t use too many resources in my opinion