Gamers and geeks have been triggering music from aging computer consoles since the early 1990s, when electronic inventors such as Meat Beat Manifesto and Nine Inch Nails used the Atari ST for quick and easy control over digital samplers. Both were definitely onto something. Nowadays, sounds from the MTV Music Generator series for the Xbox and PlayStation 2 can be spotted on European and British techno records--and rising UK star Dizzee Rascal is one likely case-in-point button masher. But for producers looking to put old-school power in their pockets, the microfrontier is best represented by Nintendo's all-purpose, original, handheld Game Boy.

Combined with laptops, processed through Pro Tools, or just left in charmingly crude form, the maestros of the Game Boy's little LCD screen are marketing their sounds under tags like "chip tunes," "chip music," or "micromusic," depending on whom you ask. Sensibilities range from the raucous, Twin Cities-based 4-bit Agitators--think frantic shoot-'em-ups--to the smooth, club-ready cuts of Brooklyn-bound Bit Shifter. Aside from a lingering love of old video game cartridges, these artists share a belief in personal electronic devices that don't just play other people's music, but that can be used to create original sounds.

Nintendo itself planted the seeds back in 1998 when the company released the Game Boy Camera accessory, which included a ridiculously simple synth sequencer. German noisemaker Alec Empire of Atari Teenage Riot was an early adopter, unleashing the Game Boy's punk rock potential on his band's 1999 Nintendo Teenage Robots CD.

Now, in 2004, the bolts are completely off the box, and all warranties are void. Users of third-party software, like the intuitive Nanoloop or the grid-based Little Sound Dj (LSDj), include a whole international community of bleep addicts. The sounds are often grainy and childish, but creators feel like they've found the ultimate secret level.

Remember: The original Roland TR-808 and TR-909 drum machines, which became legendary tools for dance and hip-hop musicians, were originally considered toys by "serious" musicians. In the hands of playful producers, they became the backbone of an entirely new kind of music. As drum machines replaced live drummers, hit records could be produced in kitchens or bedrooms. Now, with Game Boy music, all you need is a steady supply of AA batteries. "I love the direct nature of writing and composing on the Game Boy," Glomag (aka Chris Burke) recently told Artforum. He added, "I can compose music on the subway."

At community hub Micromusic, reports surface constantly about the most unusual gearhead projects, which include everything from MIDI-compatible Nintendo console systems to singing dot matrix printers. And yet, the Game Boy remains the center of attention. The Micromusic events page reveals an array of Game Boy nights in London, Paris, and Hollywood, with periodic festivals like EVENT and the annual Game Boy Music Match.

Not only does the software come from the artists themselves, but also in this DIY scene, the musicians have been extraordinarily proactive promoters. Sensitive-voiced indie songwriter Mark Denardo recently organized the Summer Game Boy Music Series at a handful of clubs in his native Chicago. In a strange twist, he recently collaborated with Sex Pistols impresario Malcolm McClaren on an album created with LSDj. Meanwhile, LSDj programmer Josh Kotlinski himself performs across Europe and his native Germany under the name Minimaster.

One fine line in the microtunes divides purity versus production. The basic sounds of Chicago artist Handheld could be fanfares stolen straight from epic video games. On the other hand, the Korean-born player calling herself Bubblyfish mixes up the circuits with a host of homemade MIDI devices and effects combined with her own classical piano training. The compelling result has already been presented at the Lincoln Center and the American Museum of the Moving Image.

Strewn along the continuum are global glitch freaks like Swedish electro-pop duo Puss, Stockholm artist Role Model, Japan's DJ 6955, and others--including American act Trash 80, the chirpy Adlib Sinner Forks, and the beautiful, ambient work of Glomag. Among the fun and friendly 8-bit Peoples collective, New York's Nullsleep stands out for his 4-bit Game Boy "minimix" of Depeche Mode hits, which are completely fresh updates of the '80s music with '80s technology.

Even retro movements must trek forward. Soon, the Nanoloop 2.0 software will port the beauty of chip music to the slightly more refined Game Boy Advance, offering better control, a 32-bit CPU, and a whopping 2.9-inch color screen. Eventually, Apple will probably open up its iPod to allow shareware downloads--and music applications will inevitably follow. For instance, imagine mixing and mangling an iPod's worth of samples with synths and digital effects. For the time being, however, players looking to take micromusic to the next level have a much simpler option: A link cable enables two Game Boys to work together like a pair of dueling banjos.

It appears that "Game Over" was just the beginning.