Speaking Game Boy: The Abbreviations Every Collector Should Know

Spend five minutes in any Game Boy forum or listing and you will drown in letters. DMG, MGB, CGB, SGB, CIB, and on it goes. This shorthand is second nature to seasoned collectors, but baffling to newcomers, and it hides some genuinely useful information. Here is a friendly, plain-English guide to the abbreviations that matter most, so you always know exactly what you are looking at.

The Game Boy Abbreviations for the Hardware Itself

Most of the console names are really model codes stamped on the hardware.

DMG / DMG-01 means Dot Matrix Game. It is the original 1989 Game Boy, the grey brick that started everything.

MGB is the Game Boy Pocket of 1996, taken from its model number MGB-001. It is the smaller, sleeker redesign with a sharper screen.

MGL is the Game Boy Light, a Japan-only 1998 model and the only classic Game Boy with a proper backlit screen.

CGB is the Game Boy Color, and AGB is the later Game Boy Advance, with AGS being the Advance SP. You will see these codes in cartridge names too, marking which system a game is for.

SGB / SGB2 is the Super Game Boy, the adapter that let you play Game Boy games on a television through the Super Nintendo, and its Japan-only sequel.

Cartridge Codes and Region Suffixes

Every official game carries a code on the cartridge and box, and it tells a small story.

Game codes usually start with the system, so a code like DMG-TR identifies the specific game, in this case Tetris, on the original Game Boy.

Region suffixes are the tags on the end of a code that show the market a copy was made for. The two most common are JPN for Japan and USA for the United States and wider North America. Europe is a patchwork of its own: UKV is the United Kingdom, NOE is Nintendo of Europe, the general Germany-issued European code, along with its variant NNOE, while EUR and NEU mark broader pan-European releases. Individual countries have their own tags too, including FAH and FRA for France, HOL for the Netherlands, ITA for Italy, ESP for Spain, and SCN for Scandinavia. Further afield you will also meet AUS for Australia and ASI for Asia. They are the quickest way to tell exactly where a copy was sold.

DMG = Dot Matrix Game | TR = Tetris | NOE = Nintendo of Europe

The Language of Condition

CIB means Complete In Box: the game with its outer box, manual, inserts and cartridge all present. It is the condition this museum favours, because it is complete yet still openable and playable.

Loose means the cartridge only, with no box or manual.

Sealed means a game still in its untouched factory wrapping.

Repro / bootleg describes an unofficial reproduction cartridge rather than a genuine Nintendo release, something every collector learns to spot.

Words from the Tech and Homebrew Side

ROM means Read-Only Memory. In everyday use it refers to the game's data, or a game file, the exact contents a cartridge holds.

GBDK is the Game Boy Development Kit, the free toolkit modern makers use to program their own games in C, as we do in our build-your-own-game series.

Why the Shorthand Is Worth Learning

Once these letters click into place, listings and conversations suddenly make sense: you can tell a Japanese Game Boy Light from a European Pocket, or a complete-in-box Tetris from a loose cartridge, at a glance. It is a small vocabulary that unlocks a big hobby. To put the names to faces, browse the original DMG-01 console and the Super Game Boy in the collection.