Ultima I
Ultima II
Ultima III
Ultima IV
Ultima V
Ultima VI
Ultima VII
Ultima VII - Part 2
Ultima VIII
Ultima IX
Ultima Underworld I
Ultima Underworld II
Worlds of Ultima I
Worlds of Ultima II
Runes of Virtue I
Runes of Virtue II
Ultima Online
Ultima Underworld - CD-ROM Edition
Others: EA CD-ROM Classics
  EA Classics Gold

Other compilations

Ultima Collection The Complete Ultima VII
Ultima Trilogy Ultima IX + Ultima Online
The Second Trilogy Miscellaneous
Ultima I-VI Series  
Year of Release: 1993
Publisher: Origin Systems Inc.
Contents: Memoirs of Sir Cabirus, A Safe Passage Through Britannia, Reference Guide, Install Guide, 2 paper maps (18 x 12" / 45 x 30 cm), 1x CD
The Ultima Trilogy was the first compilation of the Ultima Series from Origin. The package contained 3 folded cardboard maps and a single manual that covered all three games. It is the only compilation that was available for other systems beside the IBM PC compatibles.