She is credited with published work in the role-playing games industry as far back as 1994. In 2001, she was writing in the video game industry for Microsoft Game Studios. Later, she transferred to ArenaNet. She serves as the head editor for the Wily Writers Speculative Fiction Downloads site.

Short fiction

McCoy has published short fiction in various anthologies, including:

* Ravens in the Library by Quiet Thunder

* Vile Things: Extreme Deviations of Horror by Comet Press

* Masters of Horror Anthology by Triskaideka Books

* Cobalt City Christmas by Timid Pirates Productions.

Computer game work

McCoy worked as a game reviewer and journalist for Microsoft Game Studios and Xbox. She currently works for ArenaNet as one of the writers on Guild Wars 2.

Role-playing game work

McCoy's work in the role-playing game industry includes supplements for Wizards of the Coast's Forgotten Realms; FASA's Earthdawn; West End Games' World of Necroscope; Pinnacle Entertainment's Deadlands; and White Wolf's The Ascension, The Masquerade, The Reckoning and The Dreaming.

Dungeons & Dragons product line, TSR

* The Magic of Faerun, co-author; 2000

the Dreaming product line, White Wolf Publishing & ArtHaus Publishing

* Pooka Kithbook, ArtHaus Publishing; 1999

* Inanimae, contributing author; 1998

* Satyr Kithbook, 1997

* Player’s Guide, contributing author, 1997

* Second Edition, contributing author, 1997

* Storyteller’s Guide, contributing author; 1995

* Shadows on the Hill, contributing author; 1995

Mage the Ascension product line, White Wolf Publishing

* Manifesto, co-author, December 2002

* Hollow Ones Sourcebook, co-author, June 2002

* Mage Revised, contributing author, 1999

* The Bygone Bestiary, contributing author, 1998

* Technomancer’s Toybox, contributing author, 1997

* Beyond the Barriers, contributing author, 1996

the Masquerade product line, White Wolf Publishing

* Sins of the Blood, co-author, 2001

* World of Darkness, Vol. II, contributing author; 1996

Everquest product line, White Wolf Publishing

* Monsters of Norrath, co-author, August 2002

* Player’s Handbook, co-author, July 2002

The Reckoning product line, White Wolf Publishing

* Defender Sourcebook, co-author; 1999

* Survival Guide, contributing author; 1999

* Hunter: the Reckoning, contributing author; 1999

Millennium's End product line, Chameleon Eclectic

* The Medellín Agent, co-author; 1997

* Overlay Accessory Kit, contributing author; 1994

Earthdawn product line, FASA Corporation

* Magic, contributing author; 1995

* Legends of Earthdawn, contributing author; 1995

Miscellaneous

* Aberrant: Project Utopia, White Wolf Publishing, contributing author; 1999

* Deadlands: Marshall Law, Pinnacle Entertainment Group, contributing author, 1996

* World of Necroscope: Book of Adventures, West End Games, contributing author; 1995