When Dream and Day Unite
(1989)

Images and Words
(1992)

Live At The Marquee
(1993)

Awake
(1994)

A Change of Seasons
(1995)

Falling into Infinity
(1997)

Once on a Live Time
(1998)

Metropolis Pt. 2: Scenes From a Memory
(1999)

Live Scenes From New York
(2001)

Six Degrees of Inner Turbulence
(2002)

Train of Thought
(2003)

Live at Buddokant
(2004)

Octavarium
(2005)

Score 20 Aniv
(2006)

Systematic Chaos
(2007)

Black Clouds & Silver Linings
(2009)

A dramatic Turn of Events
(2011)