Skill Stop slot machines began appearing in the 1960s/70s and now are included in various online varieties. Skill Stop slots enable players to stop each reel from spinning giving players the feeling that the game involves a level of ‘skill,’ primarily due to gaming laws that came about in the 70s in New Jersey. It was said that in order to be legal the game needed to include an element of 'skill'. Skill stop machines became a huge hit in New Jersey arcades at that time and now continue to be a favorite gaming feature of some slots players. Simply either click the spinning reels to stop them or else the stop button, depending on the game.