Brian Reynolds is an American videogame designer. Reynolds has designed at SecretNewCo, Zynga, Big Huge Games, and MicroProse and has been chairman of the International Game Developers Association. He has played a major part in designing a number of multi-million selling games including Civilization II, Rise of Nations, Sid Meier's Alpha Centauri, and FrontierVille. He has also founded or co-founded three game companies, SecretNewCo, Big Huge Games, and Firaxis Games.

Firaxis Games, Inc. is an American video game developer based in Sparks, Maryland. The company was founded in May 1996 by Sid Meier, Jeff Briggs and Brian Reynolds following their departure from MicroProse, Meier's earlier venture. They were acquired by Take-Two Interactive in August 2005, and subsequently became part of the publisher's 2K label. Firaxis Games is best known for developing the Civilization and XCOM series, as well as many other games bearing Meier's name.