Game Gear

The Sega Game Gear was Sega's first handheld system. It was esentially a handheld Sega Master System. It was in color, unlike the rival Nintendo Game Boy. Sonic Drift 2, the first Sonic racing game sold in the United States, was a Game Gear exclusive. Like the SMS, the Game Gear received all Sonic Games including the SMS/SGG exclusive Sonic Chaos. It was succeeded by the Sega Nomad. Also unlike the Game Boy, the Game Gear required no attached light source, as it generated its own light.

Accessories

 * AC adapter- the adapter that allowed the user to use a wall outlet instead of batteries
 * Battery pack- a portable attachment that lasted longer than the usual six batteries
 * Tuner- an attachment that was designed to provide radio and television stations
 * Connector- attached more than one Game Gear for multiplayer

Problems
The Game Gear was plagued with problems. Because of its advanced technology compared to the Game Boy, the price was higher. The battery pack was almost essential as the system otherwise used the six batteries in fewer than six hours.

Remakes, Ports and Emulation
Majesco released a core version of the Game Gear in 2000 for a reduced price. The Majesco Core Game Gear differed slightly from the original Game Gear in that it was black and had a purple start button rather than dark grey and a blue start button, the logo on the front of the unit was no longer in color, and it did not support the television tuner accessory. Its screen had a better refresh rate than the original model. It also had a somewhat better speaker that did not distort as much when played loudly. It was part of Majesco's strategy of eking profits from products with margins too slim for the original manufacturer to pursue, and was accompanied by Majesco's licensed reissue of several classic Game Gear cartridges. Majesco-reissued cartridges are distinguished by having no plastic case, and a Majesco Sales logo on the label, as well as the current games ratings system, which differs slightly from the one formerly used by Sega. The Majesco logo was not prominent, and these were marketed under the Sega name.

The Game Gear was rereleased in a smaller handheld form factor in late 2006. This small handheld device was powered by 3 AAA batteries, had a brighter active matrix screen, and contained 20 Game Gear and Sega Master System games. It was released under several brands including Coleco and PlayPal.

The Game Gear, though unsuccessful, still has a cult following and thus ports and emulations have been made. The Game Gear versions of most of the Sonic the Hedgehog titles can be found on Sonic Mega Collection Plus, some being found only on Sonic Gems Collection. Some games are unlockables for recent Sonic titles such as Sonic Adventure.

Technical specifications

 * Main processor: Zilog Z80 (8-bit)
 * Processor speed: 3.58 MHz (same as NTSC dot clock)
 * Resolution: 160 x 146 pixels
 * Colors available: 4,096
 * Colors on screen: 32
 * Maximum sprites: 64
 * Sprite size: 8x8 or 8x16
 * Screen size: 3.2 inches (81 mm)
 * Audio: 3 square wave generators, 1 noise generator, the system has a mono speaker, but stereo sound can be had via headphone input.
 * RAM: 24 KB
 * Power:
 * internal: 6 AA batteries
 * external: 9V DC, 300mA, 3W


 * Physical:
 * dimensions: 20cm x 11,3cm x ?
 * weight: ~400g