The King of Dragons is a fantasy themed side-scrolling beat'em up. There are five different characters to choose from: a fighter, a cleric, an elf, a wizard and a dwarf. All characters have different strengths and weaknesses in speed, attack power and magic. After choosing an appropriate character, the player has to fight his way through numerous short levels guarded by an equally high number of bosses; gaining better weapons and shields/magic in the process.
The gameplay is fast-paced and action-packed, with a variety of attacks and special moves available to each character. Players must use their chosen character's strengths to overcome obstacles and defeat enemies, all while avoiding taking damage from powerful boss attacks. The game requires quick reflexes and strategic thinking to progress through the levels.