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 sets based on "Minecraft". Two more sets based on the Nether and village areas of the game were released on 1 September 2013. A fourth Micro World set, the End, was released in June 2014. Six more, larger Lego minifigure scale, sets became available November 2014. Mojang collaborates with Jinx, an online game merchandise store, to sell "Minecraft" merchandise, such as clothing, foam pickaxes, and toys of creatures in the game. By May 2012, over 1 million dollars were made from "Minecraft" merchandise sales. T-shirts and socks were the most popular products. In March 2013 Mojang signed a deal with