Seth Jaffee is a published game designer and developer, but is probably best known for his affiliation with Michael Mindes and Tasty Minstrel Games. Seth was a behind the scenes supporter of TMG from the beginning and is now an official member of the TMG team, discovering games, developing them, and helping to usher them through the production process.
Seth's first published title was Terra Prime, a somewhat obscure but solid euro style game. His best known title is Eminent Domain, the first big kickstarter success, and the first game to use the deckbuilding mechanism in a game that's not just about deck building. The first expansion to Eminent Domain (Eminent Domain: Escalation) just came out a couple of months ago, and a second one is in the works.
Seth has also done extensive development work on many TMG titles including Belfort, Ground Floor, Kings of Air and Steam, and Captains of Industry, as well as Belfort: The Expansion Expansion, and the upcoming World Fair expansion to Kings of Air and Steam.
In addition to his work on game design, development, and publishing with TMG, Seth is also the president of the Southern Arizona Gamers Association (SAGA), the organization that puts on Rincon, a game convention in Tucson, AZ in October.
You can follow Seth on twitter (@sedjtroll), and you can read his occasional, rambling game design thoughts on his game design blog.