During the peak of platform games' popularity in the late 1980s and early 1990s, platform games were estimated to consist of between a quarter and a third of all console games,[2] but have since been supplanted by first-person shooters.[3] In 2006, the genre experienced a decline in popularity, representing a 2% market share as compared to 15% in 1998;[4] however, the genre still exists in the commercial environment, with a number of games selling in the millions of units.