You build each individual piece of the system and then connect the pieces much like wires do in hardware Emulation works by handling the behavior of the processor and the individual components.Game boy emulators are developed for following operating systems: Today we have much advanced portable gaming devices far more faster and better than Gameboy, the portable gaming is not the way it was in 1980's, but even today some people would still love to play Gameboy developed games on their systems, so developers have worked since years trying to emulate the Gameboy systems onto the new advanced portable devices. Multiplayer Options: Up to four GBAs, up to two GB/GBCs.Sound: Mono speakers, stereo headphones.CPU: 16 MHz 32-bit RISC-CPU + 8-bit CISC-CPU.Gameboy has released over 650 games till now. The Gameboy was developed by Gunpei Yokoi and his team. The Gameboy which was introduced in 1989 was closely associated with the classic game Tetris, Gameboy is most successful video game ever released. The screen was four colors of gray but the device defined portability gaming with extreme fun. Since the introduction of Gameboy in 1989, Gameboy has sold over 160 million of their systems over the world.