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",
Crown and Council "Crown and Council" was not originally intended for public release; Pettersson, an artist who joined Mojang to work on Scrolls in 2011, used the relatively simple project to learn to code. He believed that even if the game was to be distributed one day, it would be rebuilt by "real programmers". The game was worked on over multiple months and used bits of code taken from other Mojang projects. Pettersson credits "Minecraft Pocket Edition" programmer Aron Nieminen as his programming mentor. It is the first game developed by Mojang that is released on Steam, although Mojang published Oxeye Game Studio's