In 1984, a game released for the NEC PC-8801 fundamentally changed the trajectory of video game history by introducing real-time combat to the role-playing genre. Before this moment, the only RPGs available were turn-based systems where players waited for commands to execute, a method that felt disconnected from the action on screen. The original Dragon Slayer, designed by Yoshio Kiya, abandoned this passive approach entirely. It required players to physically move their character through a dungeon, dodge attacks, and strike enemies directly, creating a visceral experience that had never been seen before. This was not merely a new game; it was the birth of the action RPG, a genre that would eventually dominate the industry. The game featured an overhead view of a dungeon, an in-game map to aid navigation, and a strict inventory system that allowed only one item at a time, forcing players to manage their resources with extreme care. It was a major success in Japan, establishing a formula that would be copied by countless developers in the years to follow. Square, the company that would later become a giant in the industry, published the MSX port of this game, marking one of their earliest significant contributions to the market. The game's influence rippled outward, inspiring The Legend of Zelda and Hydlide, and even influencing the creation of Dragon Quest, which would go on to define the RPG genre for a generation.
The Side-Scrolling Revolution
The sequel released in 1985, known as Dragon Slayer II: Xanadu, took the concept of real-time action and turned it on its side, creating a hybrid that would be recognized decades later as a proto-Metroidvania. While the original game used an overhead view for both exploration and combat, Xanadu introduced a side-scrolling perspective for exploration, allowing players to run, jump, and climb through a vertical world. This shift in perspective was not just aesthetic; it introduced platforming mechanics that required precise timing and spatial awareness. The game featured a large quest with many character statistics, training facilities in towns, and shops that sold items and equipment that changed the player character's visible appearance. A unique feature of Xanadu was its Karma system, where committing sins would raise a character's Karma meter and negatively affect their ability to level up, adding a moral dimension to the gameplay. The game also introduced magic that could be used to attack enemies from a distance and individual experience points for equipped items, a mechanic that allowed players to customize their gear in ways previously unseen. Xanadu set sales records in Japan, selling more than 400,000 copies, a massive number for a PC game at the time. The following year, Xanadu Scenario II was released as an expansion pack, offering a non-linear structure where players could explore eleven levels in any order, a design choice that was ahead of its time. This game also marked the first video game music soundtrack composed by Yuzo Koshiro, whose chiptune compositions would become legendary in the industry.