The world's introduction to digital xenocide, space invaders had a impact like no game before it. Using a monochrome screen, but with a transparent overlay on the screen for color, it is the game that made Taito what they are today.
In 1993, Taito released space invaders dx, which
was a JAMMA version of the same thing, but with a twist - there was several different display modes to choose from, including upright and cocktail versions of the original, but also special color overlay modes.
The neat thing about the color overlay mode is that
the color strips are purposefully out of alignment, since anyone who remembers playing the original knows that the overlays were almost never in line with each other. This sloppiness adds immensly to the feel and realism of this version.
It, however, sadly lacks a version of one of the best followups, Super Space Invaders '91.