MSX was the name of a standardized home computer architecture in the 1980s. It was a Microsoft-led attempt to create unified standards among hardware makers, conceived by one-time Microsoft Japan executive Kazuhiko Nishi. Despite Microsoft’s involvement, MSX-based machines were seldom seen in the United States and Britain, but they were popular in other markets. Eventually 5 million MSX-based units were sold worldwide.
Nishi proposed MSX as an attempt to create a single industry standard for home computers. Inspired by the success of VHS as a standard for video cassette recorders, many Japanese electronic manufacturers along with GoldStar, Philips and Spectravideo built and promoted MSX computers. Any piece of hardware or software with the MSX logo on it was compatible with MSX products of other manufacturers. In particular, the expansion cartridge form and function were part of the standard; any MSX expansion or game cartridge would work in any MSX computer.
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There was a lot of cool stuff on MSX, but I think the absolutely coolest thing is Hideo Kojima’s original Metal Gear. (The American Nintendo port sucks in comparison.)