How to Play Oklahoma Gin
Description
Gin Rummy with one elegant twist: the first upcard sets the maximum knock value for each hand. Flip a spade and the whole hand scores double. Flip an Ace and nobody knocks at all.
Objective
Be first to reach 100 points across hands, then win the match outright with end-of-game bonuses.
Setup
Each of two players gets ten cards.
The rest form the draw pile, with one card turned face-up to start the discard pile.
That first face-up card sets the knock limit for the hand: its value becomes the maximum deadwood you're allowed to hold when you knock.
Two special upcards change the whole hand: a spade doubles every score in that hand, and an Ace means nobody may knock at all — only Gin ends it.
Rules
Draw from the draw pile or discard pile, then discard one card.
Group your cards into sets (same number) or runs (same suit, consecutive).
Anything left over is deadwood and counts against you.
Knock once your deadwood is at or below that hand's knock limit.
Winning
When you knock, your opponent may add matching cards to your sets and runs before deadwood is compared.
Lower deadwood wins the hand and scores the difference.
Going out with zero deadwood (Gin) scores a 25-point bonus.
Catching a knocker whose deadwood is higher than yours (an undercut) also scores 25.
Once someone reaches 100, the match ends and bonuses are added: 100 points to the winner, plus 25 for every hand they won along the way — doubled if the loser never scored a single point.