Rather, they are commonly unofficially produced and released by offbrand game accessories companies, or sometimes by singular technologically experienced people who make and sell them for profit through websites like Etsy or Mercari.
Most linkers that connect to a link slot are capable of copying ROM information from commercial software cartridges.
A number of devices have been released which use popular flash memory cards such as SD and CF for storage.
This presents several conflicts in regard to homebrew, as Power Writer uses a large database for proper naming and saving of games.
There are also project files existing on the Internet that guide people through creating their own flash cartridge for the original Nintendo Game Boy.
A distributor of the R4 was fined over $600 thousand AUD, and was ordered to destroy any leftover stock they had,[3] and an import of R4 cartridges have been seized by the Australian Border Force, as well as other assorted counterfeit Nintendo products.