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.