while maintaining full control of the hero. Final Fantasy III introduced the classic "job system", a character progression engine allowing the player to change the character classes, as well as acquire new and advanced classes and combine class abilities, during the course of the game. That same year also saw the release of Nintendo's Fire Emblem: Ankoku Ryu to Hikari no Tsurugi, a game that set the template for the tactical role-playing game genre and was the first entry in the Fire Emblem series. Another notable strategy RPG that year was Koei's Bandit Kings of Ancient China, which was successful in combining the strategy RPG and management simulation genres, building on its own Nobunaga's Ambition series that began in 1983. Several early RPGs set in a post-apocalyptic future were also released that year, including Digital Devil Story: Megami Tensei II, and Crystalis, which was inspired by Hayao Miyazaki's Nausicaa of the Valley of the Wind. Crystalis also made advances to the action role-playing game subgenre, being a true action RPG that combined the real-time action-adventure combat and open world of The Legend of Zelda with the level-building and spell-casting of traditional RPGs like Final Fantasy. That year also saw the release of Phantasy Star III: Generations of Doom, which featured an innovative and original branching storyline, which spans three generations of characters and can be altered depending on which character the protagonist of each generation marries, leading to four possible endings. In 1991, Final Fantasy IV was one of the first role-playing games to feature a complex, involving plot, placing a much greater emphasis on character development, personal relationships, and dramatic storytelling. It also introduced a new battle system: the "Active Time Battle" system, developed by Hiroyuki Ito, where the time-keeping system does not stop. The fact that enemies can attack or be attacked at any time is credited with injecting urgency and excitement into the combat system. The ATB combat system was considered revolutionary for being a hybrid between turn-based and real-time combat, with its requirement of faster reactions from players appealing to those who were more used to action games. Nintendo executives were initially reluctant to design a new system, but as the market transitioned to the newer hardware, Nintendo saw the erosion of the commanding market share it had built up with the Nintendo Entertainment System. Nintendo's fourth-generation console, the Super Famicom, was released in Japan on