OFC is still a new game, however, the common rules for “standard OFC with Fantasyland” described above are nearly universal, both online and in the casinos that increasingly spread OFC whenever the poker tournament circuit comes to town.
There are also a few variants of the game that have caught a bit of steam in the poker community. One well-known variant is “criss-cross OFC,” which simply consists of two player playing two hands each, to form a four-handed OFC game. The hottest new variant of OFC that actually changes some rules is called "pineapple OFC."
Like other “pineapple” variants of poker games like Omaha and Texas hold’em, pineapple OFC deals each player three cards instead of one card per round, and that player must play two cards in turn, while discarding one.