In the history of video games, the fourth generation of video game consoles, more commonly referred to as the 16-bit era, began on October 30, 1987, with the Japanese release of NEC Home Electronics' PC Engine (known as the TurboGrafx-16 in North America). Though NEC released the first console of this era, sales were mostly dominated by the rivalry between Sega and Nintendo across most markets: the Sega Mega Drive (Sega Genesis in North America) and the Super Nintendo Entertainment System (SNES; Super Famicom in Japan). Cartridge-based handheld consoles became prominent during this time, such as the Nintendo Game Boy (1989), Atari Lynx (1989), Sega Game Gear (1990) and TurboExpress (1990).
Nintendo was able to capitalize on its success in the previous, third generation, and managed to win the largest worldwide market share in the fourth generation as well. Sega, however, was extremely successful in this generation and began a new franchise, Sonic the Hedgehog, to compete with Nintendo's Super Mario series of games. Several other companies released consoles in this generation, but none of them were widely successful. Nevertheless, there were other companies that started to take notice of the maturing video game industry and begin making plans to release consoles of their own in the future. While as with prior generations, game media still continued to be primarily provided on ROM cartridges, though the first optical disk systems, such as the Philips CD-i, were released to limited success. As games became more complex, concerns over video game violence, namely in titles such as Mortal Kombat and Night Trap, led to the eventual creation of the Entertainment Software Rating Board.
The emergence of fifth generation video game consoles, circa 1994, did not significantly diminish the popularity of fourth generation consoles for a few years. In 1996, however, there was a major drop in sales of hardware from this generation and a dwindling number of software publishers supporting fourth generation systems, which together led to a drop in software sales in subsequent years. This generation ended with the discontinuation of the Neo Geo in 2004.
Differences from third generation consoles
Features that distinguish some fourth generation consoles from third generation consoles include:
16-bit microprocessors
Multi-button game controllers with many buttons (3 to 8) Parallax scrolling of multi-layer tilemap backgrounds Large sprites (up to 64×64 or 16×512 pixels), 80–380 sprites on screen, 16–96 sprites per scan line Elaborate color, 64 to 4096 colors on screen, from palettes of 512 (9-bit) to 65,536 (16-bit) colors Stereo audio, with multiple channels and digital audio playback (PCM, ADPCM, streaming CD-DA audio) Advanced music synthesis (FM synthesis and/or wavetable sample-based synthesis)
Additionally, in specific cases, fourth generation hardware featured:
Backgrounds with pseudo-3D scaling and rotation
Sprites that can individually be scaled and rotated
Flat-shaded 3D polygon graphics
Surround sound support
CD-ROM support via add-ons, allowing larger storage space and full motion video playback
Home systems
TurboGrafx-16
The PC Engine was the result of a collaboration between Hudson Soft and NEC and launched in Japan on October 30, 1987. It launched under the name TurboGrafx-16 in North America on August 29, 1988.
Initially, the PC Engine was quite successful in Japan, partly due to titles available on the then-new CD-ROM format. NEC released a CD add-on in 1990 and by 1992 had released a combination TurboGrafx and CD-ROM system known as the TurboDuo.
In the United States, NEC used Bonk, a head-banging caveman, as their mascot and featured him in most of the TurboGrafx advertising from 1990 to 1994. The platform was well received initially, especially in larger markets, but failed to make inroads into the smaller metropolitan areas where NEC did not have as many store representatives or as focused in-store promotion.
The TurboGrafx-16 failed to maintain its sales momentum or to make a strong impact in North America. The TurboGrafx-16 and its CD combination system, the Turbo Duo, ceased manufacturing in North America by 1994, though a small amount of software continued to trickle out for the platform.
Mega Drive/Genesis
The Mega Drive was released in Japan on October 29, 1988. The console was released in New York City and Los Angeles on August 14, 1989, under the name Sega Genesis, and in the rest of North America later that year. It was launched in Europe and Australia on November 30, 1990, under its original name.