Micro Machines was released by Camerica in 1991. It was an unlicensed port of the 16 bit games, as released by Codemasters.
Micro Machines was a top down racing game based on the toy line of the same name. In this, players would race a variety of vehicles around different home based environments, such as a bath tub, the breakfast table, the garden and a billiard's table, with different home items being both hazards ad the markers. Despite it being an unlicensed game, it's still considered by many to be the best racing game on the system