Four seats, thirteen cards each. Empty seats are played by bots. Be the first to shed every card; the others score their cards left as penalty (doubled at 10–12 cards, tripled at 13). Lowest total after three rounds wins.
Ranks run 3 (low) to K, A, then 2 (high). Suits break ties: diamonds < clubs < hearts < spades.
Whoever holds the 3 of diamonds leads the round and must include it in the first play.
Play a single, a pair, a triple or a five-card hand: straight, flush, full house, four of a kind plus one, straight flush (lowest to highest). Straights run 3 to A; A-2-3-4-5 counts as the lowest straight and a 2 never sits high.
Follow with the same number of cards and a higher hand: singles, pairs and triples by rank then the suit of the highest card; five-card hands by type, then by their top card (full house and four of a kind by the triple or quad). Or pass.
When the other three pass, the last player to play leads anything.
Tap cards to select them; Play lights up only for a legal hand. With more than one person, each hand is hidden until that player taps I'm ready. Undo is available when playing alone. Games save automatically.
Keyboard: Tab to a card, Enter or Space to select it, then Tab to Play or Pass.