- "Demo" (démo - 1986 )
- "When Dream And Day Unite" ( 1989 )
- "ATCO Demos" (démo - 1991 )
- "Another Day" (MCD - 1992 )
- "Images And Words" ( 1992 )
- "Live At The Marquee" (Live - 1993 )
- "Images and Words - Live in Tokyo" (VHS) (Live - 1994 )
- "Awake" ( 1994 )
- "A Change Of Seasons" (MCD - 1995 )
- "Falling Into Infinity" ( 1997 )
- "Fan Club Christmas" (Compilation - 1997 )
- "Once In a Livetime" (Live - 1998 )
- "Metropolis Pt.2: Scenes From A Memory" ( 1999 )
- "Fan Club Christmas" CD 2000 (Compilation - 2000 )
- "Live Scenes from New York" (Live - 2001 )
- "Four Degrees Of Radio Edits" (Fan Club CD 2001) (Compilation - 2001 )
- "Six Degrees Of Inner Turbulence" ( 2002 )
- "Taste the Memories" (Fan Club CD 2002) (Compilation - 2002 )
- "Train Of Thought" ( 2003 )
- "Live at Budokan" (CD) (Live - 2004 )
- "A Sort of Homecoming" (Compilation - 2004 )
- "Octavarium" ( 2005 )
- "Old Bridge, New Jersey 12 - 14 - 96" (Compilation - 2006 )
- "Score" (Live - 2006 )
- "Systematic Chaos" ( 2007 )
- "New York City 3 - 4 - 93" (Compilation - 2007 )
- "Images and Words - 15th Anniversary Performance" (Fan Club CD 2007) (Live - 2008 )
- "Greatest Hit (...And 21 Other Pretty Cool Songs)" (Compilation - 2008 )
- "A Dramatic Turn of Events" (2011)