Explore the brand new region of Naljo (bigger than G/S/C's Johto), featuring 10 original cities, as well as a large number of caves, forests, routes, and secrets.After finding a lost Larvitar, Prism must collect 20 badges across multiple regions while fixing all that is wrong with this corrupted world. However, unlike other fast Pokemon, it did end up trading other stats to go as fast as it does, only maintaining a solid attack stat. It is actually the fastest water-type currently in the game, clocking in at 136 speed. Naljo is a developing region bent on the dream of purist industrialization. Barraskewda, the skewer Pokemon and the evolved form of Arrokuda, is a zippy water-type. After playing in their uncle’s minecart in an unidentified region, it somehow spins out of control and ends up in the region of Naljo. This is the story of Prism, the son/daughter of Lance. Versions 0.92, 0.93, and 0.94 were developed by RainbowDevs who are the new development team for Pokémon Prism. Version 0.94 is released, which fixes most of the bugs in the leaked version. The current leaked build is fully functional, but is missing certain things from what would have been the finalized version of the game, such as outdated sprites, missing trigger events for trainers, and a post-game mission from Lance that was supposed to have been released in an official future build of the game. The leaked build is from December 19, 2016. However, an anonymous user on 4chan leaked v0.91 (build 0144) of the game. On December 21, 2016, Nintendo sent a cease & desist order which ended the game's development.
The development team of Twitch Plays Pokémon also contributed to the game's development with lead developer Koolboyman as project manager. The game includes new mini-games and plot points in which the player controls a Pokémon. The Pokédex has 253 Pokémon, including some from each of the first four generations as well as new Elemental Types and TM's. The game is a sequel of Pokémon Brown, thus, the player can travel to Rijon for a second quest. The storyline elapses in the region of Naljo. Pokémon Prism is a ROM-Hack of Pokémon Crystal (previously a ROM-Hack of Pokémon Gold), created by Koolboyman.