| Roleplaying Game Credits: |
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| Book | | Publisher | | Credit |
| Isengard (Lord of the Rings) (2005) | | Decipher | | Author |
| More Magic and Mayhem (Warcraft) (2005) | | Sword & Sorcery Studios | | Author |
| Magic & Mayhem (Warcraft) (2004) | | Sword & Sorcery Studios | | Author |
| Trojan War, The (Mythic Vistas) (2004) | | Green Ronin Publishing | | Additional Design |
| Testament: Roleplaying in the Biblical Era (Mythic Vistas) (2003) | | Green Ronin Publishing | | Author |
| VIPER (Champions) (2003) | | Hero Games | | Author |
| Swords Into Plowshares (d20 System (generic)) (2002) | | Sean K. Reynolds Games | | Design |
| Foxbat Unhinged (Champions) (1996) | | Atlas Games | | Additional Text |
| Viper (Champions) (1993) | | Hero Games | | Writing and Design |
| Champions Universe (1992) | | Hero Games | | Additional Material |
| Gamer's Handbook of the Marvel Universe 1992 Character Updates (Marvel Super Heroes) (1992) | | TSR, Inc. | | Author |
| Islands of Terror (Ravenloft) (1992) | | TSR, Inc. | | Author |
| Wild Elves (Dragonlance) (1991) | | TSR, Inc. | | Design |
| Champions in 3-D (1990) | | Hero Games | | Author |
| Old Empires (Forgotten Realms) (1990) | | TSR, Inc. | | Design |
| Otherlands (Dragonlance) (1990) | | TSR, Inc. | | Design |
| Classic Enemies (Champions) (1989) | | Hero Games | | Development and Editing |
| Gamer's Handbook of the Marvel Universe 1989 Character Updates (Marvel Super Heroes) (1989) | | TSR, Inc. | | Author |
| Monstrous Compendium, Volume 1 (Advanced Dungeons & Dragons) (1989) | | TSR, Inc. | | Design |
| Monstrous Compendium, Volume 2 (Advanced Dungeons & Dragons) (1989) | | TSR, Inc. | | Design |
| Castle Greyhawk (1988) | | TSR, Inc. | | Author |
| Gamer's Handbook of the Marvel Universe MU1: Abomination thru Dreadnought (Marvel Super Heroes) (1988) | | TSR, Inc. | | Author |
| Gamer's Handbook of the Marvel Universe MU2: Eel thru Mad-Dog (Marvel Super Heroes) (1988) | | TSR, Inc. | | Author |
| Gamer's Handbook of the Marvel Universe MU3: Mad Thinker thru Sentry (Marvel Super Heroes) (1988) | | TSR, Inc. | | Author |
| Gamer's Handbook of the Marvel Universe MU4: Serpent Society thru Zzzax (Marvel Super Heroes) (1988) | | TSR, Inc. | | Author |
| Adventure Pack I (Advanced Dungeons & Dragons) (1987) | | TSR, Inc. | | Author |
| Book of Lairs II (Advanced Dungeons & Dragons) (1987) | | TSR, Inc. | | Author |
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| Other Game Credits: |
| |
| Product | | Publisher | | Credit |
| CyborGladiators (2004) | | Firefly Games | | Design |
| |
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| Magazine Article Credits: |
| |
| Article | | Credit |
| ""Good" Does Not Mean "Boring"" in Dragon #148 (Aug 1989) | | Author |
| "Dragon's Bestiary, The" in Dragon #141 (Jan 1989) | | Author |
| "Threshold of Evil" in Dungeon #10 (Mar/Apr 1988) | | Author |
| "Tribulations of Kanah, The" in EN World Player's Journal #2 | | Author |
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