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 mods Around November 2011, the mod "Forge" was released. Rather than adding new gameplay features to "Minecraft", "Forge" allowed players to be able to run several client-side mods simultaneously. Before becoming compatible with "Forge", "IndustrialCraft" and "BuildCraft" would not run side-by-side, because both of them needed to overwrite the same "Minecraft" base Java files. "Forge" ended the necessity to manipulate these files, allowing separate mods to run together without requiring them to touch the base source code. After "Minecraft" received its first full release in November 2011, the game's modding community continued to grow. In February 2012, Mojang hired developers of