Guardian Heroes is a 2D side-scrolling beat 'em up video game with RPG elements developed by Treasure and released in 1996 for the Sega Saturn. A band of young adventurers begin a quest to change the fate of their kingdom after an enchanted sword falls into their hands. Players may choose between four characters, each with their own unique fighting style, and embark on many different paths in the game's story mode. The game also includes a special versus mode wherein up to six players can compete against each other in arena combat.

A supreme being created the universe to find ultimate warriors to hire as its personal soldiers. A vicious battle was waged between the Earth and Sky Spirits. The Sky Spirits bestowed incredible powers upon the humans, effectively making powerful wizards for their own gain. The human wizards joined the effort against the Earth Spirits, banishing them into the darkness. Soon after this was accomplished, the Sky Spirits grew fearful and jealous of the humans, and banished them all into the darkness with the Earth Spirits. Mankind instead opted for a more physical approach to life, and the Time of the Sword began.