The original Mobile Suit Gundam was an animated science-fiction series which debuted on Japanese television in 1979. In this groundbreaking series, the traditional giant robots of Japanese anime were for the first time portrayed as realistic war machines instead of invincible superheroes. The people who used these machines to fight in a futuristic space war were complex characters whose motivations and beliefs didn't break down into simple good and evil, and the story encompassed human drama and social commentary as well as thrilling robot battles.

Mobile Suit Gundam's popularity led to a series of sequels and followups - first a three-part movie compilation, then a succession of new television serials, original videos, and theatrical films. After more than two decades, this Gundam saga has expanded to include nine television series, four video series, ten movies, and countless novels, comics, and original video game adventures. This saga encompasses six different worlds, each with its own unique history and society, and showcases the work of the most celebrated talents of the anime industry.

Although this saga's stories encompass centuries of future history and span several alternate worlds, they all share a single unifying element - the legendary line of fighting machines which bear the name of Gundam. From the prototype RX-78 Gundam featured in the original series, to the unique and colorful machines which star in later stories like G Gundam and Gundam Wing, all these stories recount the adventures of heroic Gundams and their brave pilots.