Odin Ultima — Version

I believe you're asking about the (often associated with the Ultima version) in the context of server emulation for Final Fantasy XI .

To be precise: is a specific, popular server emulator for FFXI. The "Ultima" version usually refers to Odin Server Ultima (or Odin Spaghetti Ultima), a customized, pre-packaged build of the server software. odin ultima version