| Roleplaying Game Credits: |
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| Book | | Publisher | | Credit |
| Dreaming Cities: Tri-Stat Urban Fantasy Genre (Tri-Stat dX) (2005) | | Guardians of Order | | Author |
| GURPS Banestorm (2005) | | Steve Jackson Games | | Author |
| GURPS Powers (2005) | | Steve Jackson Games | | Author |
| GURPS All-Star Jam 2004 (2004) | | Steve Jackson Games | | Author |
| GURPS Dragons (2004) | | Steve Jackson Games | | Author |
| Toxic Memes (Transhuman Space) (2004) | | Steve Jackson Games | | Additional Material and Contributions |
| Faerie Stories (Ars Magica) (2003) | | Atlas Games | | Author |
| GURPS Magic Items 3 (2003) | | Steve Jackson Games | | Magic Item Concepts |
| GURPS Traveller: Starships (2003) | | Steve Jackson Games | | Additional Material |
| High Frontier, The (Transhuman Space) (2003) | | Steve Jackson Games | | Author |
| GURPS Castle Falkenstein: The Ottoman Empire (2002) | | Steve Jackson Games | | Author |
| GURPS Cliffhangers, 2nd Ed. (2002) | | Steve Jackson Games | | Additional Material |
| GURPS Vehicles Expansion 1 (2002) | | Steve Jackson Games | | Additional Material |
| Hellboy Sourcebook and Roleplaying Game (2002) | | Steve Jackson Games | | Author |
| Personnel Files (Transhuman Space) (2002) | | Steve Jackson Games | | Author |
| Cugel's Compendium of Indispensable Advantages (Dying Earth) (2001) | | Pelgrane Press | | Author |
| GURPS Atlantis (2001) | | Steve Jackson Games | | Author |
| GURPS Discworld Also (2001) | | Steve Jackson Games | | Author |
| GURPS Low Tech (2001) | | Steve Jackson Games | | Additional Material |
| GURPS Monsters (2001) | | Steve Jackson Games | | Author |
| GURPS Steam-Tech (2001) | | Steve Jackson Games | | Author |
| GURPS Traveller: Alien Races 4 (2001) | | Steve Jackson Games | | Author |
| GURPS Castle Falkenstein (2000) | | Steve Jackson Games | | Author |
| GURPS Villains (2000) | | Steve Jackson Games | | Author |
| Swashbuckler's Handbook, The (Mage: The Sorcerers Crusade) (2000) | | White Wolf | | Author |
| Artisans Handbook, The (Mage: The Sorcerers Crusade) (1999) | | White Wolf | | Author |
| GURPS Who's Who 1 (1999) | | Steve Jackson Games | | Compilation |
| GURPS Who's Who 1 (1999) | | Steve Jackson Games | | Writing and Editing |
| GURPS Who's Who 2 (1999) | | Steve Jackson Games | | Writing and Editing |
| GURPS Who's Who 2 (1999) | | Steve Jackson Games | | Compilation |
| GURPS Y2K (1999) | | Steve Jackson Games | | Author |
| Munchkin's Guide to Powergaming, The (Generic) (1999) | | Steve Jackson Games | | Editing |
| Castles and Covenants (Mage: The Sorcerers Crusade) (1998) | | White Wolf | | Author |
| GURPS Discworld (1998) | | Steve Jackson Games | | Author |
| GURPS Undead (1998) | | Steve Jackson Games | | Additional Material |
| GURPS Places of Mystery (1996) | | Steve Jackson Games | | Author |
| Dying of the Light, The (Warhammer FRP) (1995) | | Hogshead Publishing Ltd. | | Writing and Editing |
| GURPS Celtic Myth (1995) | | Steve Jackson Games | | Additional Material |
| Hero System Almanac 2 (1995) | | Hero Games | | Author |
| GURPS Grimoire (1994) | | Steve Jackson Games | | Additional Material |
| GURPS Arabian Nights (1993) | | Steve Jackson Games | | Author |
| Viper (Champions) (1993) | | Hero Games | | Editorial Contributions |
| Champions Universe (1992) | | Hero Games | | Additional Material |
| Kingdom of Champions (1990) | | Hero Games | | Writing and Design |
| Champions Presents (1989) | | Hero Games | | Writing and Design |
| Classic Enemies (Champions) (1989) | | Hero Games | | Editorial Contributions |
| Fiend Folio (Advanced Dungeons & Dragons) (1981) | | TSR, Inc. | | Design Contribution |
| |
| |
| Magazine Article Credits: |
| |
| Article | | Credit |
| "Behind Enemy Lines" in Dragon #217 (May 1995) | | Author |
| "Book of Arabia, The" in Arcane #20 (Jun 1997) | | Author |
| "Broken Spines: The High Sky Flying" in Last Province #4 (Jun/Jul 1993) | | Author |
| "Chaos From Mount Dorren" in White Dwarf #32 (Aug 1982) | | Author |
| "Crooks and Crusaders" in Adventurers Club #7 (Summer 1986) | | Author |
| "Curse of the Wildland, The" in White Dwarf #30 (Apr/May 1982) | | Author |
| "Demonist, The" in White Dwarf #47 (Nov 1983) | | Author |
| "Dungeons & … Dragoons" in White Dwarf #20 (Aug/Sep 1980) | | Author |
| "Fiend Factory: Inhuman Gods (part 1)" in White Dwarf #39 (Mar 1983) | | Author |
| "Fiend Factory: Inhuman Gods (part II)" in White Dwarf #40 (Apr 1983) | | Author |
| "Fiend Factory: Inhuman Gods (part III)" in White Dwarf #41 (May 1983) | | Author |
| "Fiend Factory: Inhuman Gods (part IV)" in White Dwarf #42 (Jun 1983) | | Author |
| "Fistful of Dwarfs" in Visions #1 (May 1999) | | Author |
| "Heroes of the Underdork: The Muskrat" in Dragon #282 (Apr 2001) | | Author |
| "Lashing Out" in White Dwarf #35 (Nov 1982) | | Author |
| "Lay Down the Law" in Arcane #17 (Mar 1997) | | Author |
| "Librarian's Love-Child in World Domination Horror!!" in Valkyrie Quarterly #23 | | Author |
| "Lumurians, The" in Shadis #48 (Jun 1998) | | Author |
| "Making Over the Mage" in Arcane #15 (Jan 1997) | | Author |
| "Mechanics of Magic, The" in Arcane #19 (May 1997) | | Author |
| "NPCs" in Last Province #4 (Jun/Jul 1993) | | Author |
| "Starbase: Aliens" in White Dwarf #47 (Nov 1983) | | Author |
| "Sultan's Turret in a Noose of Light, The" in Roleplayer #30 (Jan 1993) | | Author |
| "The Elastic Supplement" in Fantazia #8 | | Author |
| "The Missing Window" in Fantazia #7 | | Author |
| "Truth - Obviously, The" in Shadis #32 | | Author |
| "Why on Earth…" in Arcane #18 (Apr 1997) | | Author |
| "Without Let or Hindrance" in Shadis #18 (Mar 1995) | | Author |
| "Worldly Power" in White Dwarf #46 (Oct 1983) | | Author |
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| Comic Book Credits: |
| |
| Book | | Publisher | | Credit |
| Dork Tower #13 (Feb 2001) | | Dork Storm Press | | Additional Writing |
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