You hold 9 cards. Select up to 5, then Play to score them or Discard to redraw. One 52-card deck per Heat β binned cards stay gone until the next Heat.
Score = (Hand Base + rank sum Γ0.6) Γ Multiplier. Only cards forming the hand score β a Pair scores 2 cards, kickers score nothing. Ace is always 15. Tap β Hands in-game for the full table.
Each Heat: a target, 4 plays, 5 discards. Every 3rd Heat (and all Endless Heats) twists the rules with a Heat Modifier.
Shops sell jokers (max 1 per shop, 5 slots, swap when buying at full slots, sell in any shop) and supplies: destroy, copy or re-suit deck cards, and Hand Boosts that permanently level up a hand type's base value.
Money earns interest: +1 run coin per 5 held when you clear a Heat (max +5). Spend or compound β your call. Reroll the joker offer for 2 coins.
Clearing a Heat in fewer plays earns a better grade: S (+3 coins), A (+2), B (+1), C. Top 5 runs make the high score board.
Clear Heat 9 to win, then go Endless (Heat 10+). Higher Heats pay more run and account coins β spend account coins on permanent joker unlocks.