I was planning to create a specific server for a semi persistent MMO (long session length) with a large number of players (50 to 100), but I think this might take too much time for production, especially considering that the mobile platform will require special care. So I would like to know if there's already some pre made solution, or helper. At the moment I found: Photon: I've experience with peer to peer photon and I'm very satisfied with it, but Photon authoritative solution feels a bit less supported. DarkRift 2: just found it. Seems very fast and probably viable for mobiles, can it be a good solution? SpatialOS: it seems a good option, especially considering it has a distributed server architecture. I think it is out there for 2 years, so I'm not sure about its own possible lifetime. uMMORPG: I'm very fine with assets that do a small things or handles something on the editor. But I'm a bit worried when using an asset for a large part of the game. This asset seems well polished and with a very live community. Still it also relies on uNet (or some continuation of it), and I fear it could be dropped sometime in the future. In the old post I see Smartfox is mentioned. Not sure if it is still top notch, but is this a valid option? BTW, this server by no means require to handle login, store player data or anything like that. Even matchmaking is not a priority. At the moment the only element we need to define is how to handle so many data exchange during the gameplay session.