Minecraft in his performances. A simulation of the game was featured in Lady Gaga's "G.U.Y." music video. The game is also referenced heavily in "Informative Murder Porn", the second episode of the seventeenth season of the animated television series "South Park". "Luca$", the seventeenth episode of the 25th season of the animated sitcom "The Simpsons" was inspired by "Minecraft"; Persson responded by tweeting "I'm not sure how I feel about it." After the release of "Minecraft", some video games were released with various similarities with "Minecraft", and some were called "clones" of the game. Examples include "Ace of Spades", "CastleMiner", "CraftWorld",
Minecraft the Egmont Group, a children's book publisher, to create "Minecraft" handbooks, annuals, poster books, and magazines. MineCon is an official convention dedicated to "Minecraft". The first one was held in November 2011 at the Mandalay Bay Hotel and Casino in Las Vegas. All 4,500 tickets for MineCon 2011 were sold out by 31 October. The event included the official launch of "Minecraft"; keynote speeches, including one by Persson; building and costume contests; "Minecraft"-themed breakout classes; exhibits by leading gaming and "Minecraft"-related companies; commemorative merchandise; and autograph and picture times with Mojang employees and well-known contributors from the "Minecraft" community. After