When I was in High School I used to play Guts with my friends. I don’t know of an “official” set of rules, but I think it’s generally a three card game used to induce
gambling and build pots. There was no betting or draw. My friends and I would play deuces wild. Three of a suit was a flush, three consecutive was a straight, three consecutive suited cards was a straight flush and deuces were wild for suits as well as value. I think we played aces as high only, but I could be wrong on that.
Everyone put in an ante and the cards were dealt. Each person declared “In” or “Fold” as the action moved from first player to dealer’s left around to the dealer. Anyone who was “In” was committing to covering the pot if they lost. If no one was In when the action reached the dealer, the dealer could take the pot if he had a pair or better. If more than one person was In, the best ranked hand took the pot and the loser(s) had to add the amount of the pot to the next hand. If five people were In, one would win the pot and the losers would each add the value of the pot creating a pot 4X the size of the previous pot. This would go on until the pot was won by only one person.
We were playing a “Dealer’s Choice” game, so dealing Guts meant the same player continued to deal until the pot was gone. Looking back, I think there was such an edge for the dealer that it should have been a consistent choice of game for anyone who wanted to win money.