Forgotten Realms
The Avatar Series
Originally published under the pseudonym Richard Awlinson. Ciencin shares the pseydonym with Troy Denning, who wrote part 3 of the Avatar Series "Waterdeep". The choice of the surname Awlinson was an inside joke which sounds like "all in one".
- Shadowdale, (1989) ISBN 978-0-7869-3105-7
- Tantras, (1989) ISBN 978-0-7869-3108-8
Robert Silverberg's Time Tours
Published under the pseudonym Nick Baron.
Glory's End, (1990) ISBN 978-0-0610-6013-7
The Pirate Paradox, (1991) ISBN 978-0-0610-6016-8, with Greg Cox
The Wolves of Autumn
- The Wolves of Autumn, (1992) ISBN 978-0-4463-6248-1
- The Lotus and the Rose, (1992) ISBN 978-0-4463-6249-8
The Harpers
- The Night Parade, (1992) ISBN 978-1-5607-6323-9
The Vampire Odyssey
- The Vampire Odyssey, (1992) ISBN 978-0-8217-3853-5
- The Wildlings, (1992) ISBN 978-0-8217-3934-1
- Parliament of Blood, (1992) ISBN 978-0-8217-3995-2
The Nightmare Club
Published under the pseudonym Nick Baron.
The Initiation, (1993) ISBN 978-0-8217-4316-4
The Mask, (1993) ISBN 978-0-8217-4349-2
Slay Ride, (1993) ISBN 978-0-8217-4419-2
Spring Break, (1994) ISBN 978-0-8217-4542-7
WildC.A.T.S, Covert Action Teams
- Dark Blade Falling, (1995) ISBN 978-0-6798-7480-5
- Evil Within, (1995) ISBN 978-0-6798-7481-2
Dinotopia
Windchaser, (1995) ISBN 978-0-6798-6981-8
Lost City, (1996) ISBN 978-0-6798-6983-2
Sabertooth Mountain, (1996) ISBN 978-0-6798-8095-0, with John Vornholt
Thunderfalls, (1996) ISBN 978-0-6798-8256-5
Sky Dance, (1999) ISBN 978-0-6798-0417-8
Return to the Lost City, (2000) ISBN 978-0-3758-1018-3
The Explorers, (2001) ISBN 978-0-3758-1396-2
The Elven Ways
- The Ways of Magic, (1996) ISBN 978-0-3807-7980-2
- Ancient Games, (1997) ISBN 978-0-3807-7981-9
- Night of Glory, (1998) ISBN 978-0-3807-7983-3
The Lurker Files
- Faceless, (1996) ISBN 978-0-6798-8235-0
- Know Fear, (1996) ISBN 978-0-6798-8236-7
- Nemesis, (1997) ISBN 978-0-6798-8506-1
- Incarnate, (1997) ISBN 978-0-6798-8507-8
- Apparition, (1997) ISBN 978-0-6798-8634-1
- Triad, (1997) ISBN 978-0-6798-8635-8
Godzilla
- Godzilla, King of the Monsters, (1996) ISBN 978-0-6798-8220-6
- Godzilla Invades America, (1997) ISBN 978-0-6798-8752-2
- Godzilla: Journey to Monster Island, (1998) ISBN 978-0-6798-8901-4
- Godzilla vs. the Space Monster, (1998) ISBN 978-0-6798-8902-1
Dinoverse
- I Was A Teenage T-Rex, (1999) ISBN 978-0-6798-8843-7, originally published as Dinoverse
- The Teens Time Forgot, (2000) ISBN 978-0-6798-8844-4
- Raptor Without A Cause, (2000) ISBN 978-0-6798-8845-1
- Please Don't Eat the Teacher, (2000) ISBN 978-0-6798-8846-8
- Beverly Hills Brontosaurus, (2000) ISBN 978-0-3758-0595-0
- Dinosaurs Ate My Homework, (2000) ISBN 978-0-3758-0596-7
Genął
- Time and Chance, (2001) ISBN 978-0-4410-0856-8, with Jeff Marriotte
Jurassic Park Adventures
Ciencin's Jurassic Park stories are original novels based on the Jurassic Park films rather than directly on Michael Crichton's work.
- Survivor, (2001) ISBN 978-0-3758-1289-7
- Prey, (2001) ISBN 978-0-3758-1290-3
- Flyers, (2002) ISBN 978-0-7434-7974-5
Buffyverse
- Sweet Sixteen , (2001) ISBN 978-0-7434-4961-8
- Vengeance , (2002) ISBN 978-0-7434-4980-9, with Dan Jolley
- Nemesis , (2003) ISBN 978-0-6898-6702-6, with Denise Ciencin
- Mortal Fear , (2003) ISBN 978-0-7434-2771-5, with Denise Ciencin
Starfleet Corps of Engineers
Some Assembly Required, (2002) ISBN 978-0-7434-6442-0, with Greg Brodeur, Dave Galanter, Dan Jolley, Aaron Rosenberg, and Keith R.A. DeCandido
Age of Unreason, (2003)
Breakdowns, (2005) ISBN 978-1-4165-0326-2, with Keith R. A. DeCandido, Kevin Dilmore, Heather Jarman, and Dayton Ward
Transformers
- Hardwired, (2003) ISBN 978-0-7434-5898-6
Kim Possible
Tweeb Trouble, (2004) ISBN 978-0-7868-4629-0
EverQuest
- The Rogue's Hour, (2004) ISBN 978-1-5931-5294-9
Charmed
- Luck Be a Lady, (2004) ISBN 978-0-6898-5793-5
- Light of the World, (2006) ISBN 978-1-4169-1470-9
- High Spirits, (2007) ISBN 978-1-4169-3668-8
Kim Possible: Pick a Villain
Game On!, (2005) ISBN 978-0-7868-4652-8
Masters of Mayhem, (2005) ISBN 978-0-7868-4689-4
Standalone novels
- Virtual Destruction, (1995) ISBN 978-0-8217-5010-0
- Jurassic Park 3, (2001) ISBN 978-0-3758-9001-7
- The Stevens Get Even, (2004) ISBN 978-0-7868-4708-2
- The Legend of Zorro, (2005) ISBN 978-0-0608-3304-6