.GB File Extension

Emulator ROM image file

Game File
Files with the GB extension are associated with the Game Boy portable gaming console that was developed by Nintendo and released in 1989. The Game Boy used memory cartridges for changing and loading games.

GB is an acronym for Game Boy and one GB file contains all the data of a single Game Boy Cartridge. GB files are proprietary software. They're licensed under exclusive legal right to the company holding the copyright for the game stored on the original game cartridge.

How to open GB Files

GB files can be loaded on a PC or on a Mac using special Game Boy emulators like the ones listed below.

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