Books

• Awakenings: New Magic in 2057 (1995) by Diane Piron-Gelman, Sharon Turner Mulvihill, and Steve Kenson

• Portfolio of a Dragon: Dunkelzahn's Secrets (1996) with Mike Colton

• The Enchanted (Changeling - The Dreaming) (1997)

• Underworld Sourcebook (1997)

• All Our yesterdays: The Time Travel Sourcebook (Star Trek : The Expanded Universe) (2000) by James Kiley, Kenneth Hite, S. John Ross, Steven S. Long, and Steve Kenson

• Raiders Renegades & Rogues (2000) by Christian Moore, Rob Vauz, Robin D. Laws, Steve Kenson, and Steven S. Long

• Caste Book: Zenith (2002) by David Wendt, Geoffrey C. Grabowski , and Steve Kenson

• Gurps Spirits: Denizens of the Otherworld (2002) by Stephen Kenson and Steve Jackson Games

• City of Angels (Demon the Fallen) (2003) by Alan Kravit, Chuck Wendigm and Steve Kinson

• Freedom City: Mutants & Masterminds: Campaign Setting (Mutants & Masterminds) (2003)

• The Psychic's Handbook (2003)

BattleTech Universe

1. Technobabel

2. Crossroads

3. Ragnarock

4. The Burning Time

Wings of Fortune

1. x

2. x

3. Honor Among Thieves

Role Playing Games

• Mutants & Masterminds -- Winner Pen & Paper Fan Awards for Best Roleplaying Game, Best Cover Art, and Best Interior Art, and tied for Best Graphic Design (with Eden Studios' Buffy: the Vampire Slayer RPG); winner EN World d20 System Awards (ENnie Awards) at GenCon -- the gold award for Best d20 Game and the ENnie Peer Award.   Freedom City also won two ENies: the silver awards for Best Campaign Setting and Best Interior Art. Thanks to all the fans who voted in the awards and to Morrus and the folks from EN World for setting up such a great awards ceremony at the convention.
  Provides you with all the tools you need to create any super-power, from energy blasts and force field to controlling magnetism, casting spells, powered armor, or anything else you can imagine. The game also provides dozens of sample super-powers; a broad menu that allows you to create most characters simply by choosing the powers that you want.

Author

• Changeling;  The Enchanted (Year of the Ally)

• Dark Ages Vampire:  Road of Kings 

• Green Ronin Publishing, d20 System:  The Shaman's Handbook (2002), The Witch's Handbook (2002)

• Earthdawn:  The Earthdawn Survival Guide, Crystal Raiders of Barsaive (1998)

• GURPS:  Gurps Spirits (2002)

• Kindred of the East:  Dharma Book: Thousand Whispers (2001) with Melissa Uran (Illustrator)
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• Mage The Acension:  Tradition Book: Verbena Revised (2003)

• Marvel Superheroes Adventure Game:  Avengers: Masters of Evil (1998), Live Free or Die! (Adventurer's Guild Adventure)

• Mutants & Masterminds:  Mutants & Masterminds, core rulebook (2002), Freedom City: Mutants & Masterminds: Campaign Setting (2003)

• Shadowrun

  Awakenings: New Magic in 2057 (1995), Super Tuesday!, Portfolio of a Dragon: Dunkelzahn's Secrets, Underworld, Mob War!, New Seattle (1999), Magic in the Shadows (2003), Survival of the Fittest

Co-Author

• Paradigm Concepts, d20 system:  Lords of the Peaks: The Essential Guide to Giants, Unveiled Masters: The Essential Guide to Mind Flayers

Contributor

• Aberrant:  Aberrant Worldwide Phase I, Elites, Aberrant Player's Guide, Aberrant: Underworld, The unpublished Brainwaves sourcebook has been released online.

• Changeling: the Dreaming (Second Edition), The Changeling Storyteller's Guide

• Dark Ages Vampire:  Ashen Cults, Dark Ages: Vampire, Dark Ages: Mage Grimoire (2003), Player's Guide to the High Clans

• DC Universe Role Playing Game:  JLA Sourcebook, JSA Sourcebook (also the unpublished Flash, Green Lantern, and Titans sourcebooks)

• Demon:  Demon the Fallen, City of Angels (2003)

• Earthdawn:  Legends of Earthdawn (1995), Magic: A Manual of Mystic Secrets (1996), Prelude to War: An Earthdawn Epic, Arcane, Mysteries of Barsaive (1997), Secret Societies of Barsaive (1997), Dragons, Barsaive at War (1999)

• EverQuest Role Playing Game:  EverQuest RPG Player's Handbook

• Exalted:  Caste Book: Zenith (2002), Caste Book: Eclipse, the Sidereals

• GURPS:  Best of Pyramid 2 (2002)

• Hunter, The Reckoning:  Hunter: The Infernal Hunter: The Infernal (2003)

• In Nomine:  The Marches (1997), Heaven & Hell, Angelic Player's Guide (1997), Liber Canticorum

• Kindred of the East: San Francisco by Night (2002), Heresies of the Way

• Marvel Superheroes Adventure Game:  The Guide to Marvel Earth, Marvel Super Heroes(tm) The Reed Richards' Guide to Everything (1999)

• Mummy:  Mummy: The Resurrection (2001)

• San Angelo:  Enemies of San Angelo (1999)

• Shadowrun:  The Grimoire (Second Edition), Harlequin's Back, Threats, Shadows of the Underworld, The Shadowrun Companion: Beyond the Shadows, Target: UCAS (1997), Target: Smuggler Havens (1998) , Shadowrun (Third Edition), Critters, Corporate Download, Brainscan, Target: Matrix, Year of the Comet. Target: Awakened Lands (2003), Threats 2 (2003), Shadows of North America, Target: Wastelands (2003), Dragons of the Sixth World (2003).

• Silver Age Sentinels:  Silver Age Sentinels rulebook, Silver Age Sentinels d20 rulebook, Shields of Justice: the Hero's Handbook

• Star Trek:  The Way of D'Era (1999), Starfleet Academy (1998), Raiders Renegades & Rogues (2000), All Our Yesterdays (2000)

• VOR The Maelstrom:  Growlers Forcebook, Zykhee Forcebook

Development Assistance

• San Angelo:  City of Heroes, including the 1.5 edition (2004)

• Star Trek:  Planetary Adventures, Star Trek: Deep Space Nine RPG as well as several other projects unpublished because of Last Unicorn's loss of the Star Trek license.

Other RPG credits

• Dragonlance: Fifth Age: The Sylvan Veil adventure book BY Richard Dakan (1999) (contributor)

• Feng Shui: Back for Seconds (contributor)

• Hong Kong Action TheatrE! (2001):  Blue Dragon, White Tiger (contributor).

• Role Aids: One of his first published projects was some demons for Mayfair's Demons line of AD&D supplements.

• Torg: Creatures of Orrorsh and Creatures of Tharkhold (contributor).

• Wildstrike!: wrote the optional card-play rules for the Fuzion system.