I’d say Element is the one to go for. A list of clients is available here:
https://matrix.org/ecosystem/clients/

Shouldn’t take more than 20 minutes or so depending on how fast you are.

I’m damaged by vocabulary outside of gaming so for me “retro gaming” always sound a bit weird.
I’m used to retro being a newly produced item that mimics an older style - a chair produced in 2026 that looks like it belongs in the 1960s f.e., compared to vintage being an item that is at least 20 years old and an antique being at least 100 years old. My teacups will officially be antique in two years and it feels kinda cool.

When speaking of games I’ve just accepted that retro either means “from my childhood” or “old” depending on how the speaker feels about it and that “how old” usually differ from meaning “at least two console generations old” to “20 years old” to “The era of my childhood, forever and ever!”.

The funny thing is how the word for the newly produced items imitating older styles has come to mean “older” when speaking of games.

If we look at the description for retro it’s original meaning is something new imitating an older style:

Compare to the word vintage that means old:

I see the word retro used for “old” spread outside of gaming nowadays too, I wonder what we will use to describe a new production imitating an older style in the future. :)

Well, it’s fantasy (jrpg) and a real classic co-op - secret of mana for snes:
https://www.co-optimus.com/Editorial/1002/co-op-classics-secret-of-mana.html
https://www.nintendojo.com/features/columns/retro-scope/retro-scope-secret-of-mana

I really wish the culture on lemmy would evolve to include a short summary of the content and a reason for sharing a link instead of just posting a link without context.