Real-time strategy (RTS) is a sub-genre of strategy video games in which the game does not progress incrementally in turns. Real-time strategy games allow for all players to simultaneously play the game in "real-time". This is contrasted by turn-based strategy (TBS) games, where players must take turns to play. The term "real-time strategy" was coined by Brett Sperry to market Dune II in the early 1990s.
