I just had a dig around, the back-end is implemented in Rust.

Smite, Paladins, Realm Royale, Minecraft Bedrock, and Rocket League.

Citizen Sleeper is another great game that’s well worth your time!

It’ll be interesting to see if this runs long enough to overlap with the Starfield launch - I could see them getting an insane spike in subscribers then anyway, but this would likely seal the deal for many more.