How many circles does a "Twister" board have?

The original Twister board game features four rows of six colored circles, equaling 24 circles total on the mat. The colors are red, green, yellow and blue.

This game of physical skill is produced by the Milton Bradley Corporation, based on a patent submitted by Charles F. Foley and Neil Rabens in 1966. The object of the game is for each player to place a hand or foot on the colored circle determined by a spinner. The early success of the game also fueled controversy, as the physical nature of Twister drew the ire of competing game companies that accused Milton-Bradley of marketing a game that was too promiscuous.