<p>I'm not very familiar with the Evolution SMP series, but from what I gathered from the descriptions and from the few videos I've watched, it's a private server. All its residents are friends and fellow Youtubers, collaborating to create Youtube content. Opening up servers to the public requires a lot of maintenance work and vandalism protection. If you think that I'm mistaken somewhere you can DM Grian on Twitter and ask directly. </p>