Twister

Origin
"Twister" is a game where a number of players are instructed to place a specific body part on specifically-colored spaces. It was criticized for its manner of play and called by some "sex in a box."

Effects
When players begint he game, their physiology becomes more elastic and easy to manipulate. Adolescent players, in addition to this elasticity, are at a higher chance of becoming sexually active through the game, regardless of orientation or beliefs (meaning, a conservative Christian or certain asexuals would have sex, and those who do would pay no attention to the sex, or even number, of their partner(s)).