sentences:  Some were on the program on a professional level, often to promote games such as Cevat Yerli's guest appearance to promote Crysis.However, other guests came on the program with no specific project to discuss, such as Rod Humble's appearance on the show or American McGee's guest appearance.. Other guests would come on during one of the many special episodes produced during one of the industry's many trade shows such as the Game Developers Conference or E3.These guests included Ken Levine from 2K Boston, Josh Mosqueira and Mark Noseworthy from Relic Entertainment, Warren Spector of Junction Point Studios, Erik Wolpaw and Kim Swift from Valve, and Chris Taylor from Gas Powered Games.