[mrspolarbear]

• H : Hold'em
• O: Omaha
• R: Razz
• S: Seven-card Stud high
• E: Seven-card stud high-low Eight or better, or hi-lo

If you are playing a H.O.R.S.E rotation game, the game would change every time the dealer button made a full round. In tournaments, the game changes at the end of each round, or after a set and predetermined amount of time.