| Roleplaying Game Credits: |
| |
| Book | | Publisher | | Credit |
| Hollow Earth Expedition (2006) | | Exile Game Studio | | Author |
| Lords of Madness: The Book of Aberrations (Dungeons & Dragons) (2005) | | Wizards of the Coast | | Design |
| Encyclopedia Vanguard: Modern d20 (d20 Modern) (2004) | | Fast Forward Entertainment | | Writing and Design |
| Fiend Folio (Dungeons & Dragons) (2003) | | Wizards of the Coast | | Additional Design |
| Dungeons & Dragons Monster Manual II (2002) | | Wizards of the Coast | | Design |
| Axe of the Dwarvish Lords (Advanced Dungeons & Dragons) (1999) | | TSR, Inc. | | Editing |
| Gates of Firestorm Peak, The (Advanced Dungeons & Dragons) (1999) | | TSR, Inc. | | Creative Director |
| A Paladin In Hell (Advanced Dungeons & Dragons) (1998) | | TSR, Inc. | | Editing |
| College of Wizardry (Advanced Dungeons & Dragons) (1998) | | TSR, Inc. | | Creative Director |
| Monstrous Compendium Planescape Appendix III (1998) | | TSR, Inc. | | Project Manager |
| Return to the Tomb of Horrors (Advanced Dungeons & Dragons) (1998) | | TSR, Inc. | | Editing |
| Return to the Tomb of Horrors (Advanced Dungeons & Dragons) (1998) | | TSR, Inc. | | Creative Director |
| Wizard's Spell Compendium, Volume Four (Advanced Dungeons & Dragons) (1998) | | TSR, Inc. | | Project Coordinator |
| Dead Gods (Planescape) (1997) | | TSR, Inc. | | Project Manager |
| Great Modron March, The (Planescape) (1997) | | TSR, Inc. | | Creative Director |
| Of Ships and the Sea (Advanced Dungeons & Dragons) (1997) | | TSR, Inc. | | System Design |
| Of Ships and the Sea (Advanced Dungeons & Dragons) (1997) | | TSR, Inc. | | Creative Director |
| Sea Devils, The (Advanced Dungeons & Dragons) (1997) | | TSR, Inc. | | Assistance |
| Sea Devils, The (Advanced Dungeons & Dragons) (1997) | | TSR, Inc. | | Creative Director |
| Wizard's Spell Compendium, Volume Two (Advanced Dungeons & Dragons) (1997) | | TSR, Inc. | | Creative Director |
| A Hero's Tale (Advanced Dungeons & Dragons) (1996) | | TSR, Inc. | | Editing |
| Den of Thieves (Advanced Dungeons & Dragons) (1996) | | TSR, Inc. | | Creative Director |
| Eye of Doom (Advanced Dungeons & Dragons) (1996) | | TSR, Inc. | | Creative Director |
| Eye of Pain (Monstrous Arcana) (1996) | | TSR, Inc. | | Creative Director |
| Eye to Eye (Advanced Dungeons & Dragons) (1996) | | TSR, Inc. | | Creative Director |
| I, Tyrant (Monstrous Arcana) (1996) | | TSR, Inc. | | Creative Director |
| Monstrous Compendium Annual, Volume Three (Advanced Dungeons & Dragons) (1996) | | TSR, Inc. | | Creative Director |
| Player's Option: Spells & Magic (Advanced Dungeons & Dragons) (1996) | | TSR, Inc. | | Creative Director |
| Sages & Specialists (Advanced Dungeons & Dragons) (1996) | | TSR, Inc. | | Creative Director |
| Wizard's Spell Compendium, Volume One (Advanced Dungeons & Dragons) (1996) | | TSR, Inc. | | Creative Director |
| World Builder's Guidebook (Advanced Dungeons & Dragons) (1996) | | TSR, Inc. | | Creative Director |
| AD&D Dungeon Master Guide, 2nd Ed. Revised (Advanced Dungeons & Dragons) (1995) | | TSR, Inc. | | Developer |
| AD&D Dungeon Master Screen & Master Index (Advanced Dungeons & Dragons) (1995) | | TSR, Inc. | | Project Coordinator |
| AD&D Player's Handbook, 2nd Ed. Revised (Advanced Dungeons & Dragons) (1995) | | TSR, Inc. | | Developer |
| Cleric's Challenge II (Advanced Dungeons & Dragons) (1995) | | TSR, Inc. | | Creative Director |
| Encyclopedia Magica Volume 2 (Advanced Dungeons & Dragons) (1995) | | TSR, Inc. | | Project Coordinator |
| Encyclopedia Magica Volume 3 (Advanced Dungeons & Dragons) (1995) | | TSR, Inc. | | Project Coordinator |
| Encyclopedia Magica Volume 4 and Index (Advanced Dungeons & Dragons) (1995) | | TSR, Inc. | | Project Coordinator |
| Monstrous Compendium Annual Volume Two (Advanced Dungeons & Dragons) (1995) | | TSR, Inc. | | Creative Director |
| Player's Option: Combat & Tactics (Advanced Dungeons & Dragons) (1995) | | TSR, Inc. | | Project Coordinator |
| Player's Option: Skills & Powers (Advanced Dungeons & Dragons) (1995) | | TSR, Inc. | | Project Coordinator |
| Kromosome (Amazing Engine) (1994) | | TSR, Inc. | | Editing |
| Temple, Tower & Tomb (Advanced Dungeons & Dragons) (1994) | | TSR, Inc. | | Design |
| A Dozen and One Adventures (Al-Qadim) (1993) | | TSR, Inc. | | Editing |
| Glory of Rome Campaign Sourcebook, The (Advanced Dungeons & Dragons) (1993) | | TSR, Inc. | | Graphic Design |
| Monstrous Manual (Advanced Dungeons & Dragons) (1993) | | TSR, Inc. | | Concepts |
| Monstrous Manual (Advanced Dungeons & Dragons) (1993) | | TSR, Inc. | | Guidance |
| Overlord of Bonparr, The (Gamma World) (1993) | | TSR, Inc. | | Editing |
| A Mighty Fortress Campaign Sourcebook (Advanced Dungeons & Dragons) (1992) | | TSR, Inc. | | Design |
| Complete Book of Elves, The (Advanced Dungeons & Dragons) (1992) | | TSR, Inc. | | Overseer and Advice |
| Fighter's Challenge (Advanced Dungeons & Dragons) (1992) | | TSR, Inc. | | Editing |
| Complete Psionics Handbook, The (Advanced Dungeons & Dragons) (1991) | | TSR, Inc. | | Design |
| Legend of Spelljammer, The (1991) | | TSR, Inc. | | Editing |
| Forgotten Realms Adventures (1990) | | TSR, Inc. | | Editing |
| Horde, The (Forgotten Realms) (1990) | | TSR, Inc. | | Editing |
| Monstrous Compendium Dragonlance Appendix (1990) | | TSR, Inc. | | Design |
| Monstrous Compendium Spelljammer Appendix (1990) | | TSR, Inc. | | Design |
| Ronin Challenge (Oriental Adventures) (1990) | | TSR, Inc. | | Editing |
| AD&D Dungeon Master's Guide, 2nd Ed. (Advanced Dungeons & Dragons) (1989) | | TSR, Inc. | | Developer |
| AD&D Player's Handbook, 2nd Ed. (Advanced Dungeons & Dragons) (1989) | | TSR, Inc. | | Developer |
| Complete Fighter's Handbook, The (Advanced Dungeons & Dragons) (1989) | | TSR, Inc. | | Editing |
| Monstrous Compendium, Volume 1 (Advanced Dungeons & Dragons) (1989) | | TSR, Inc. | | Design Concept |
| Monstrous Compendium, Volume 2 (Advanced Dungeons & Dragons) (1989) | | TSR, Inc. | | Design Concept |
| Spelljammer: AD&D Adventures in Space (1989) | | TSR, Inc. | | Development and Editing |
| Greyhawk Adventures (1988) | | TSR, Inc. | | Editing |
| Kara-Tur: The Eastern Realms (Oriental Adventures) (1988) | | TSR, Inc. | | Editing |
| Mad Monkey vs. the Dragon Claw (Oriental Adventures) (1988) | | TSR, Inc. | | Editing |
| Minrothad Guilds, The (Dungeons & Dragons (classic)) (1988) | | TSR, Inc. | | Editing |
| Ruins of Adventure (Forgotten Realms) (1988) | | TSR, Inc. | | Author |
| Treasure Hunt (Advanced Dungeons & Dragons) (1986) | | TSR, Inc. | | Editing |
| Earthshaker! (Dungeons & Dragons (classic)) (1985) | | TSR, Inc. | | Editing |
| Oriental Adventures (Advanced Dungeons & Dragons) (1985) | | TSR, Inc. | | Editing |
| Oriental Adventures (Advanced Dungeons & Dragons) (1985) | | TSR, Inc. | | Product Design |
| Temple of Elemental Evil, The (Advanced Dungeons & Dragons) (1985) | | TSR, Inc. | | Editing |
| Zebulon's Guide to Frontier Space (Star Frontiers) (1985) | | TSR, Inc. | | Graphic Design |
| World of Greyhawk (1983) | | TSR, Inc. | | Editing |
| Dwellers of the Forbidden City (Advanced Dungeons & Dragons) (1981) | | TSR, Inc. | | Editing |
| Gamma World Referee's Screen and Mini-Module (1981) | | TSR, Inc. | | Editing |
| |
| |
| Magazine Article Credits: |
| |
| Article | | Credit |
| "Bad Seeds" in Dragon #292 (Feb 2002) | | Author |
| |
| |
| Fiction Credits: |
| |
| Book | | Publisher | | Credit |
| Wanderlust (Dragonlance) (1991) | | TSR, Inc. | | Author |
| |
| |
