Pokemon Prism was in development for eight years and expected to release on December 25. Despite having several pre-release versions, Koolboyman did not receive a cease and desist from Nintendo until December 21, which took the anonymous group of distributors by surprise. "We assumed that if there was going to be a DMCA takedown notice or a cease and desist, it would happen long before now," they said.
In an effort to protect the creators of Prism, the team of leakers removed the credits from the ROM hack and added in a thank you message to fans who finish the game.Pokemon Prism isn't the only fan-made project to recently shut down, with support for Pokemon Uranium ceasing earlier this year. Additionally, a fan remake of Metroid 2 called AM2R was shut down by Nintendo in August. Alex Osborn is a freelance writer for IGN. You can follow him on Twitter.