Greg Costikyan is a game designer who has designed more than 30 commercially published games in a variety of media -- boardgames, tabletop roleplaying, PC games, online games, mobile games, and social network games. He's won four Origins Awards, is an inductee into the Adventure Gaming Hall of Fame, and received the Maverick Award from the International Game Developers Association in 2007 for "tireless promotion of independent games."
A complete ludography is available at his personal website.
"When I was 13, and an enthusiastic fan of board wargames ... I spent some time looking over a list of wargames divided into different categories ... thinking to myself that I wanted to find a style of game to make my one, to study more seriously and become expert on. One category popped out at me, and was what I decided to specialize in: multiplayer games." -- Greg Costikyan
In Conquistador Developer's notes, he writes about his work at SPI as a helping hand and junior developer (see file and web link on game page).