The reliability of these bootlegs are often poor, and has become such a problem that hackers have started to introduce warning screens into their games, cautioning users that if they paid for it, they may have been scammed.Įarly Pokémon ROM hacks date back to the late 1990s with modified editions of Pokémon Red. However, since ROM hacks are often distributed over the Internet for free, they are regularly sold as bootleg games, usually against the hacker’s wishes. These are unauthorised copies of published games which are sold to consumers, often flashed onto after-market game paks or game cards and lacking the official Nintendo Seal. There is a distinction between ROM hacks and 'bootleg games'. Though the core-series is by far the most popular series to hack, there are also many fan-created Pokémon games that do not use these as basis, and instead are, for example, modified versions of the Pokémon Mystery Dungeon series and Pokémon Conquest. These factors, as well as Pokémon’s notable popularity throughout the world, has lead to the creation of thousands of different games spanning multiple generations, ranging from minor adjustments to additional new features and, more and more frequently, entirely new fan-made Pokémon games. The core series Pokémon game system is considered very versatile and lends itself well to modification, giving hackers a lot of creative freedom together with a solid, well-tested game engine. The hackers achieve this by changing the code of the Read- Only Memory of a published video game to create something new.

ROM hacks, also known as hack games or ROM patches, are video games that have been edited or altered by enthusiasts. Pokémon Brilliant Diamond and Shining PearlĪ warning to users about bootleggers included in Pokémon rijonAdventures.

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