The GameBooster (also spelled as Game Booster on the package) was a half-hearted attempt to carry on Nintendo's Super Game Boy's legacy. However, the actual product ended up so far from the mark that it is shocking this piece of hardware ever made it to production. Not only was the GameBooster limited to playing only original Game Boy games, the only sound output is a looping, horrendously shrill theme that will force users to mute their televisions after they hear the six second clip loop more than once. The GameBooster also requires the user to plug an official Nintendo 64 cartridge into the back so that it can circumvent Nintendo's lockout chip.
The GameBooster is, however, multi-faceted. In addition to being a terrible Super Game Boy, it has cheat functions like a Game Shark as well as a built-in Breakout clone game.
This hardware was seemingly licensed by several companies. According to NESWorld.com's article on the GameBooster, it was developed by Datel and released in 1998. In North America, Rocket Game Products released a variant under the same name and Innovation released a Super GB Booster. The GB Hunter was EMS's NTSC version of Datel's PAL original.