Nostalrius was a private World of Warcraft server, which opened on February 28, 2015. The server ran Patch 1.12, catering to aficionados of the early version of the game, nicknamed "Vanilla". Stating breach of copyright, Blizzard Entertainment issued the administrators of the server a cease and desist letter, and so the Nostalrius server was shut down on April 10, 2016, leading to outcry on Facebook and Twitter and large-scale coverage in mainstream computing journalism.