The game also featured character creation, highly customizable characters, class-based puzzles, and a new scenario system, allowing players to choose which of 15 scenarios, or quests, to play through in the order of their choice.
It was also an episodic video game, with expansion disks released soon after offering more scenarios.
The game revolves around a leader who must lead his army against overwhelming enemy forces, while recruiting soldiers along the way and with each unit able to gain experience and level up through battle.
While its RPG elements were limited, lacking traditional statistical or leveling systems, the game featured real-time combat with a gun, bringing it close to the action RPG formula that Falcom would later be known for.
The game's desert island overworld also featured a day-night cycle, non-player characters the player could attack or converse with, and the need to survive by finding and consuming rations to restore hit points lost with each normal action. While the RPG elements in Druaga were very subtle, its success in Japan inspired the near-simultaneous development of three early action role-playing games, combining Druagas real-time hack-and-slash gameplay with stronger RPG mechanics, all released in late 1984: Dragon Slayer, Courageous Perseus, and Hydlide.
Japanese computers also employed Yamaha FM synthesis sound boards since the early 1980s, allowing video game music composers such as Yuzo Koshiro to produce highly regarded chiptune music for RPG companies such as Nihon Falcom.
Due to hardware differences, only a small portion of Japanese computer games were released in North America, as ports to either consoles (like the NES or Genesis) or American PC platforms (like MS-DOS).
Dragon Slayer Jr: Romancia simplified the RPG mechanics of Xanadu, such as removing the character customization and simplifying the numerical statistics into icons, and emphasized faster-paced platform action, with a strict 30-minute time limit.