Information:  - MicroProse was an American video game publisher and developer founded by "Wild" Bill Stealey and Sid Meier in 1982 as MicroProse Software Inc. It developed and published numerous games, many of which are regarded as groundbreaking, classics and cult titles, including starting the "Civilization" and "X-COM" series. Most of their internally developed titles were vehicle simulation and strategy games.  - Lightspeed is a video game developed and released by MicroProse in 1990 . It features a space flight simulator game and action game elements with an emphasis on strategy and exploration . The box describes the title as an `` Interstellar Action and Adventure '' game . The game features space exploration , trade , combat and diplomacy in the same vein as 4X s such as Master of Orion . Lightspeed , unlike the popular series of turn - based strategy games , plays out in real - time . A sequel , entitled Hyperspeed , was released by MicroProse in 1991 . It was nearly identical to Lightspeed , except that it included two additional star clusters for veterans of the first game .  - Sidney K. "Sid" Meier (born February 24, 1954) is a programmer, designer, and producer of several popular strategy video games and simulation video games, most notably the "Civilization" series. Meier co-founded MicroProse in 1982 with Bill Stealey and is the Director of Creative Development of Firaxis Games, which he co-founded with Jeff Briggs and Brian Reynolds in 1996. He has won several prestigious accolades for his contributions to the video game industry.    What entity does 'lightspeed ' has the relation 'composer' with?
A:
jeff briggs