“HORSE Poker Game Rules
-- How to Play a H.O.R.S.E. Poker Game”

Definition: In a H.O.R.S.E. poker game or tournament event, the kind of poker played in each round varies -- in this case, the five games are:

H : Hold'em
O: Omaha
R: Razz
S: Seven-card Stud high
E: Seven-card stud 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.