A while back I compiled this list. My point in doing so was to demonstrate that Ultima, unlike say Wizardry or Might and Magic or the Gold Box Games or any other series of CRPGs, was essentially about doing ritual magic, and that killing monsters was mostly a sideline or distraction.
MAJOR MAGICAL WORKINGS AND INITIATIONS IN THE "ULTIMA" SERIES OF COMPUTER GAMES
Ultima I (1980):
--After initiation into a minium of two occult groups, travel backwards in time to the eve of Mondain's Great Working, and ruin evermore his Gem of Immortality.
Ultima II (1982):
--Claim the Quicksword, an artifact from outside time.
--Seek out and receive baptism from "Father Antos."
--Travel backwards in time to the antediluvian age and slay another evil wizard, Mondain's protege and child-bride Minax.
Ultima III (1983):
--Find the hidden way to the magic land.
--Undergo four rituals of scarification.
--Compel the Earth Serpent to do your bidding.
--Receive the benediction of the Lord of Time.
--Exorcise the magical construct EXODUS using the cards of Love, Sol, Moons, and Death.
Ultima IV (now we're talking) (1985):
--Claim the Eight Runes and Eight Stones of Virtue.
--Find the Lost Shrine of Spirituality in the Supernal Realm.
--Achieve the Eight-Part Initiation into the Way of the Avatar.
--Seize the Skull of Mondain and destroy it.
--Defeat an infinite army of demons.
--Open the way to the Abyss with the Bell of Courage, Book of Truth, and Candle of Love.
--Navigate the Abyss and find the Codex of Ultimate Wisdom.
Ultima V (1988):
--Visit the Codex eight times and learn the Inner Wisdom of the Way of the Avatar.
--Assume leadership of the Resistance, an occult society, while infiltrating the highest ranks of the Oppression, a diametrically opposed society.
--Find the three enduring shards of Mondain's Gem of Immortality and ritually destroy them.
--Receive fourth-degree ordination in the Way of the Avatar from your Holy Guardian Angel.
--Speak the holy words, and descend into the "Hole in the World."
Ultima VI (1990):
--Communicate with the extradimensional Wisps, and learn the secret word that destroys the world.
--Learn the magic language Gargish.
--Accept the Amulet of Submission.
--Enter rapport with the spirits of Mondain, Minax, and EXODUS.
--Achieve the least initiation into the traditions of the Gargoyles.
--Transverse the impassable mountains of rigor.
--Assume control of the extratemporal Vortex Cube.
--Marry the Way of the Avatar to the Gargish tradition by banishing the Codex back to the Abyss. (Alchemy!)
Ultima Underworld (1992):
--Undergo ritual initiation into the Knights of Carabus, another occult society.
--Recover the Tripartite Key of Truth, Love, and Courage.
--Open the Chamber of Virtue.
--Claim, then destroy, the Eight Talismans of Virtue, achieving the highest possible initiation of the Way of the Avatar.
Ultima VII (1992):
--Join the Fellowship, yet another occult society.
--Endure ritual initiation into the Fellowship.
--Defeat the ritual wards and wake Penumbra, the sleeping fortuneteller.
--Find the lost race of Emps.
--Communicate again with the Wisps.
--Ride with the Ferryman to the land of the Dead.
--Free the Dead from their enslavement to the dark lich.
--Volunteer to sacrifice yourself in the Well of Souls.
--Learn the Answers of Life and Death.
--Accquire patronage of the extratemporal Lord of Time.
--Defeat the Monster in the Tetrahedron.
--Reach the lost island Ambrosia and bypass its wards.
--Break the power of the Moons.
--Sit in the Seat of Virtue, and detonate the Black Gate.
--Visit the Isle of Fire and achieve the initiations of Truth, Love, and Courage.
--Claim the Blackrock Sword.
--Replicate the alchemical banishing of the Codex, with the core of EXODUS.
Ultima Underworld II (1993):
--Open the Labyrinth of Worlds.
--Pass the tests of the Scintillus Academy Final Exam, winning initiation into still another occult society (albeit one already destroyed).
--Rouse the spirit of Praecor Loth, King of the World.
--Crash the floating castle, Killorn Keep.
--Navigate the Supernal Realm.
--Bind an elemental prince into your soul.
--End the world of Talorus and bring about the next.
--See the future.
Ultima VII 2: Serpent Isle (1993):
--Take the Test of Knighthood and join the Knights of Monitor.
--Endure the ritual bloodletting of the Test.
--Meet and slay your totem animal.
--Accept ritual scarification (tattooing).
--Summon the Great Sea Turtle.
--Witness the rebirth of the Phoenix and claim her Egg.
--Create life.
--Loose the demon Arcadion upon the world.
--Achieve the second degree of initiation into the Gargish mysteries.
--With the Helm of Courage, Rose of Love, and Mirror of Truth, break an eons-old enchantment.
--Loot the Temple of Order and the Temple of Chaos.
--Achieve the highest level of initiation into the Ophidian mysteries.
--Plant the Tree of Balance.
--Resurrect the dead.
--Bring about the apocalypse.
--Sacrifice your closest friend.
--Open the Wall of Lights and escape this mortal coil into the Supernal Realm.
--Restore the Great Earth Serpent.
--Bind your dead friend into magical bondage.
Ultima VIII: Pagan (1994):
-- Witness the Ceremony of Eternity and earn initiation into the Adepts of Earth, a necromantic occult society.
-- Apprentice yourself to the necromancer Vividos.
--Summon the shades of dead necromancers of epochs past, and learn their wisdom.
-- Speak to Lithios, Titan of Earth.
-- Inter the elder necromancer Lothian, elevating your master Vividos to leadership and yourself to pride of place at his right hand.
-- Travel as a pilgrim to the Birthplace of Moriens, a sacred site.
-- Commune with the Zealan Deities.
-- Grant peace to Kumash-Gor, an unquiet spirit.
-- Join the Adepts of Air, another occult society.
-- Hear Stratos, the Mystic Voice, and earn the Breath of Wind.
-- Free the bound Titan of Water, dooming the world to slow drowning.
-- Initiate into the ranks of the Adepts of Fire, slaying those who would stop you.
-- Summon the demon Arcadion and bend him once more to your will.
-- Participate in the Rite of Flame, bargaining with the Titan of Fire.
-- Murder your way to the rank of First Sorcerer, leader of the Adepts of Fire.
-- Assemble the blackrock “key of the world” from elements of earth, wind, water, and fire, and open the world of Pagan to the Void.
-- Slay the four Titans of Pagan and claim the office of Titan of Ether.
Ultima IX: Ascension (1999) is a hideous mess but its original script called for the main character to complete a reckoning on the world of Britannia, Book of Revelations style, destroying both the Guardian and Lord British in an act of apotheosis. This would have been, by my count, the fourth time the Avatar destroyed a world in some kind of fiery apocalypse, excluding the earthquakes and disasters which supposedly heralded the ends of each of the first three games, and which were incidental to the player’s actions.