Prime Rummy

Prime Rummy is a game for two to four players. The object of the game is to create sets of cards whose total values equal prime numbers.

You will need a French-suited deck with no jokers. For a two-player game, the dealer gives each player ten cards. Each player receives seven cards if three or four are playing. After dealing the hands, the dealer places the remainder of the deck face down in the center of the table and turns over the top card to start the discard pile.  

Play follows the general rules of straight gin rummy.  At the beginning of each turn, a player can draw from the deck or take the exposed card at the top of the discard pile.  Players end their turns by discarding a card. 

Players are trying to create hands in which the sums of values of the red and black cards are prime numbers.  The color totals are counted separately.  Aces are worth one, and face cards are worth zero. 

For example, player has these cards in their hand:

♢A, ♤4, ♡9, ♢8, ♡Q, ♢4, ♧K, ♡10, ♡3, ♤J

Grouping them by color, the player has 

♢A, ♡9, ♢8, ♡Q, ♢4, ♡10, ♡3 for a red total of 35.

and

♤4, ♧K, ♤J for a black total of 4.

When a player has prime numbers in their hand, they can go out by discarding a card and revealing their hand.

A player who only has cards of one color in their hand can go out if the value is prime.