"Lemmings" has also been called a predecessor of the modern real-time strategy (RTS) video game genre. A 1991 "Amiga Power" article claimed that "Lemmings" "was the first major game to introduce the 'indirect-control' concept," an element that is now common in many RTS games. Blizzard Entertainment developer Bob Fitch said that part of the inspiration for the first "Warcraft" game, "", was based on developing a competitive multiplayer RTS that combined elements of "The Lost Vikings" (which he had worked on) and "Lemmings"; Fitch said "We just went, 'Oh it's so cool when you see lots of Lemmings all over the place. Why don't we have lots of Vikings all over instead, and then the Vikings can fight each other." "Lemmings" introduction of RTS elements has been noted by fantasy author Terry Pratchett; in his novel "Interesting Times", an army of golems is controlled in a fashion reminiscent of the "Lemmings" user interface. When readers asked if this was deliberate, Pratchett responded: "Merely because the red army can fight, dig, march and climb and is controlled by little icons? Can't imagine how anyone thought that... Not only did I wipe "Lemmings" from my hard disk, I overwrote it so I couldn't get it back."