Portable console released in 1989
Unlike the Game & Watch series, the Game Boy could simply change games by swapping cartridges. The initial model was 8-bit with a 4 color screen. The later model, the Game Boy Color, upped this number to 54 simultaneous colours.
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Game Boy
The Game Boy is Nintendo's first handheld with swappable game cartridges. It has a basic control scheme; a d-pad, with an A, B, Start and Select buttons, and the general design of the console is very simplistic and bulky, so that it was difficult for children to accidentally damage the device. The screen is a monochrome LCD screen, which is difficult to see due to the lack of colours or a light. A contrast switch was included, and third party light accessories were developed to make the screen easier to see. Despite all that, the screen is prone to a number of glitches, so many people choose to modify and swap out the Game Boy's screen for something more reliable. The console was sold with 4 AA batteries (required to power the console), along with a pair of stereo headphones and a "Tetris" Game Boy cartridge.
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Stereo Headphones
The Stereo Headphones can be connected via the earphone jack, and allows you to listen to the Game Boy's audio in stereo sound, whereas the Game Boy's speaker will usually only play mono sound. The headphones were bundled item with the main console, but were sold separately in Japan.
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Rechargeable Adapter
The Rechargable Adapter is a rechargeable battery, that also doubles as an AC adapter for the original Game Boy. When fully charged, it can be used to power a Game Boy for roughly 10 hours.
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Game Boy Game Link Cable
The Game Link Cable for the Game Boy allows for two consoles to be connected for multiplayer games. This cable only has plugs for the original Game Boy model; to connect an original Game Boy model to later models, you must use either the Game Boy link cable adapter (MGB-004) or the universal link cable (MGB-010).
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At some point, Nintendo began distributed an amended version of this Game Link Cable with additional shielding, to help reduce any electromagnetic interference that might interrupt communications between Game Boy consoles.
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Battery Case
The Battery Case is used for recharging the Game Boy's battery, using four C batteries that can be removed and replaced by new C batteries. It provides a better amount of power than the Rechargeable Adapter, supplying roughly 40 additional hours of power, but is typically found to be more inconvenient due to its large size and weight. The Battery Case is also much rarer than the Rechargeable Adapter; it was only released in Japan, and its release appears to be limited.
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Game Boy Soft Case
The Game Boy Soft Case is a pouch for storing a Game Boy console and Game Boy cartridges. It's made of a material called Belleseime, a Japanese material made of a blend of polyester and nylon microfibers that is very easy to clean.
(Credit to beforemario.com for the original picture)
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Four Player Adapter
The Four Player Adapter is an accessory that allows four players to connect and play a multiplayer game, rather than the usual limitation of two-player multiplayer. The main unit has a built-in link cable and three link cable ports, meaning the unit can be connected to one Game Boy console, while the other three consoles need to connect with three Game Link Cables, one for each console.
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Game Boy Cleaning Kit
The Game Boy Cleaning Kit contains a console cleaner with a spare cleaning pad for when the original gets too dirty, and a cartridge cleaner with two spare cleaning pads. The console cleaner resembles an elongated black Game Boy cartridge and is repeatedly inserted into the cartridge slot to clean it. The cartridge cleaner is plastic stick with cleaning pads on both sides, that are used to clean the contacts on Game Boy cartridges.
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Game Boy Cartridge
The Cartridge for the Game Boy, generally sold in a cardboard box with instructions. The hardware code for Game Boy cartridges isn't written anywhere on the cartridges, nor is it mentioned on any supplemental material. The only source seems to be specifically Nintendo's website, as can be seen here.
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This model of Game Boy cartridge is used for games that are enhanced when used with Game Boy Color consoles, allowing for games to be fully compatible with all models of Game Boy. Using one of these cartridges with a Game Boy Color allows the game to be played in full colour. These cartridges are typically black-coloured, to distinguish themselves from standard grey cartridges.
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Rechargeable Battery Pack II AC Adapter
This AC Adapter is used to charge the Rechargeable Battery Pack II (DMG-11). It inputs the same amount of power as the original Rechargeable Adapter's power cable (DMG-03).
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Rechargeable Battery Pack II
The Rechargeable Battery Pack II seems to be a newer model of the Rechargeable Adapter (DMG-03). It serves the same purpose; it's a rechargeable battery, that also doubles as an AC adapter for the original Game Boy. Aside from its much slimmer design, there really seems to be no difference in charge time or power output. Also interesting to note, this accessory only seems to have been released in Europe.
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Game Boy Rumble Game Pak
This is a Game Boy cartridge with a vibration motor inside, providing rumble feedback based on the player's performance. It requires a single AAA battery and is used by games such as "Pokemon Pinball" and "Perfect Dark". Weirdly, these cartridges use a DMG hardware code, despite exclusively being used for Game Boy Color games.
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Universal Game Link Adapter
The Universal Game Link Adapter is a conversion adapter that allows the original Game Boy to connect to the later Game Boy models. This accessory was only sold attached to the Game Boy Color Game Link Cable (CGB-003).
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Game Boy Tilt Sensor Game Pak
This is a Game Boy Color cartridge with an accelerometer inside, which can detect when the console is tilted, and at which speed it was tilted. This type of Game Boy cartridge is mostly known for being used for "Kirby Tilt 'n' Tumble". Again, this cartridge uses a DMG hardware code, despite exclusively being used for Game Boy Color games.
