After Nintendo delivered a cease and desist notice, fan-developed game Pokémon Prism has now leaked to the web. Adam "Koolboyman" Vierra received a letter from the gaming giant (on 21st December) requesting his project immediately stop production; he promptly obliged, shutting down both the website and the unreleased game. Now, however, some disgruntled fans have hacked the ROM and released it into the wild.
For those that are unaware, Pokémon Prism is a ROM hack of Pokémon Crystal that sees players take the role of Elite Four Champion Lance's son/daughter. Promising a new experience, the game features new Pokémon types including Abnormal, Sound and Gas along with a new region to explore called Naljo. The game was in development for eight years and was due to be released on 25th December, before receiving the aforementioned cease and desist 4 days before launch.
The pirates originally uploaded the file to 4chan alongside a text file, giving some insight into why they released the game despite the creator obeying Nintendo's takedown notices. They also speak of how they got hold of the ROM, saying "Some dev was careless". It's worth noting that they also disconnect themselves from the development team, replacing any credits with a thank you at after completion.
This is not the first time Nintendo has protected its IP, as back in August it shutdown another fan-made project; Pokémon Uranium. In this case it seems that determined users online are keen to share the fan-developed effort, though seemingly without the backing of those that actually created the game.