Technosoft was one of the truly great videogame studios. Based in Japan, they are best known for their brilliantly innovative shoot-em-ups, their careful attention to visual detail, and their unforgettable musical scores. They hit their creative peak in the early ’90s on the Sega Genesis: the masterful Thunder Force series; the surprisingly clever Elemental Master; a superb rendition of the best video pinball game ever made, Devil’s Crush. And early in the Genesis’ life span lay a little gem called Herzog Zwei.