Sports are games that play competitively one team, containing or controlled by you, and another team that opposes you. This opposing team(s) can be controlled by other real life people or artificial intelligence.
Racing: One competes against time or opponent using some means of transportation
Sports game: emulate the playing of traditional physical sports.
It is estimated the net worth of the video game market is $86.9 Billion
PlayStation 2 is the best selling system of all time with more than 155 million units sold
Tetris is the best selling game ever selling more than 143 million copies