Dreiziehn

• Deck: one 60-card deck per player: 52 cards plus two jokers per suit. In multiplayer every player gets their own deck.
• Cards: numbered 1–13; the card colour runs from blue (1) to red (13). Cards only move up: hand or stack top to a cache or the middle, cache top to the middle. Nothing goes back.
• Start: shuffle each deck, put 15 cards in your personal stack, and add the rest to the shared draw stack. Deal yourself 5 hand cards from the draw stack.
• Turn: play at least one card, then end your turn. Ending the turn draws back up to 5 from the shared draw stack; in multiplayer the turn then passes to the next player.
• Stack: only the top card shows. Play it like a hand card: onto any cache or the middle. The next card is revealed.
• Caches: four personal piles. You may put one hand card on each cache per turn; a stack card may also go on a cache. A cache top can only move to the middle.
• Middle: four shared middle piles. Each starts with a 1 and counts up to a 13; suit doesn't matter. A joker is wild. When a pile reaches 13, its cards are shuffled into the shared draw stack and the slot starts again at 1.
• Win: empty your stack and all four caches. Cards left in your hand or the shared draw stack are fine. In multiplayer the first player to do this wins.

Tap a hand card, your stack top or a cache top, then tap a middle pile or one of your caches. Tap the selected card again to put it back.