One of the first. one of the most popular, and considered by many to be the greatest of Computer Role-Playing Game series.
The Ultima series spans nine main titles, and four "spin-off" games.
The series consits of the following titles:
Ultima II - Revenge of the Enchantress
Ultima III - Exodus
Ultima IV - Quest of the Avatar
Ultima V - Warriors of Destiny
Ultima VI - The False Prophet
Ultima VII - The Black Gate
Ultima VII Expansion - The Forge of Virtue
Ultima VII Part Two - Serpent Isle
Ultima VII Part Two Expansion - The Silver Seed
Ultima VIII - Pagan
Ultima IX - Ascension
The following "Spin-off" titles are also part of the Ultima universe:
Worlds of Ultima - Martian Dreams
Worlds of Ultima II - Savage Empire
Ultima Underworld - The Stygian Abyss
Ultima Underworld II - Labyrinth of Worlds
The Ultima Series was created by Richard Garriort, also known as "Lord British". The early games were written by himself, while the later games were the work of the company he co-founded, Origin.
Ultima Online was also the first Massively Multiplayer Online Role-Playing Game (MMORPG). This was based on an alternate background, starting way back with Ultima I.
Ultima Online has had many upgrades and expansion packs, and is still running today.