Question: Who is the creator of the tabletop roleplaying game beside Adam Koebel which won the 2013 ENnie award for "Best Rules"

Context articles: Matt James (game designer)
Day Dreamer Interactive
Geist: The Sin-Eaters
Powered by the Apocalypse
Dungeon World
Starshield
Aces &amp; Eights: Shattered Frontier
Brian R. James
Dread (role-playing game)
TerraDrive Live

Matt James (born 1981) is an American game designer and a decorated veteran of the United States Army.
 As a game designer, James is best known for his online and print works for the "Dungeons & Dragons" fantasy role-playing game published by Wizards of the Coast, "Pathfinder" role-playing game by Paizo, and Privateer Press.
 He has also designed game content for Wolfgang Baur's Kobold Press (formerly Open Design LLC).
 In 2012 James won an ENnie Award for "" and has been nominated for several Origins Awards.
 In 2014, James won an ENnie Award for "".
Day Dreamer Interactive (abbreviated DDI) is a Winnipeg-based Canadian tabletop roleplaying game publisher.
Geist: The Sin-Eaters is a tabletop roleplaying game and setting for White Wolf Game Studio's World of Darkness line released in August 2009.
 "Geist", in this context, refers to a spirit bound to a once-dead human, resulting in a Sin-Eater.
Powered by the Apocalypse (PbtA) is a role-playing game system developed for the 2010 game "Apocalypse World" and also used for "Dungeon World", "Monsterhearts" and numerous other RPGs.
 "Apocalypse World" won the 2010 Indie RPG Awards for "Most Innovative Game" and Dungeon World won the 2013 ENnie award for "Best Rules".
Dungeon World is a fantasy tabletop roleplaying game.
 Created by Sage LaTorra and Adam Koebel, the game uses the Powered by the Apocalypse engine originally designed for "Apocalypse World" and used in "Monsterhearts" and other games.
 The game is advertised as having old school style with modern rules.
 The text of the game was released under the Creative Commons Attribution 3.0 Unported License.
Starshield was a proposed trilogy of galactic fantasy novels written by Tracy Hickman and Margaret Weis, and was envisioned to spin off a tabletop roleplaying game and an online strategy game.
 Only two of the three novels have so far been released.
Aces & Eights: Shattered Frontier is an American award-winning role-playing game, written by Jolly R. Blackburn, Brian Jelke, Steve Johansson, Dave Kenzer, Jennifer Kenzer and Mark Plemmons, and published by Kenzer & Company in 2007.
 "Aces & Eights" won the Origins Award "Roleplaying Game of the Year 2007", was nominated for four ENnie Awards; "Best Production Values", "Best Rules", "Best Game" and "Product of the Year", eventually winning the Silver ENnie Award for "Best Game".
Brian R. James (born 1974) is an award winning game designer and patent holding software engineer.
 As a writer, Brian is best known for his online and print works for the "Dungeons & Dragons" fantasy role-playing game published by Wizards of the Coast.
 In game design circles, Brian is highly regarded for his deep knowledge of the Forgotten Realms campaign setting and its extensive history.
 In 2012 Brian won a Silver ENnie Award for "" and he has been nominated for other ENnie Awards and Origins Awards.
Dread is a horror RPG published by The Impossible Dream.
 The game uses a Jenga tower for action resolution and was winner of the 2006 Ennie Award for Innovation as well as being nominated for Best Game and Best Rules.
TerraDrive Live, created by Tony Hellmann and Christian Kelley, published by Technomancer Press is a heavily modified form of Assassin which includes Collectible Card Game elements.
 TerraDrive Live is the first Massively Multiplayer Live Action Role Playing Game.It is set in the "TerraDrive Universe", based on TerraDrive, a tabletop roleplaying game also published by Technomancer Press.
 It debuted at Penny Arcade Expo on August 24, 2007 in Seattle.