Double Sixes

Every domino in this deckbuilder has two ends. Double Sixes takes the run-based, score-chasing structure you know from deckbuilders like it and rebuilds it from the pips up — around dominoes instead of cards. Match ends, branch off doubles, and chase bigger and bigger chains for score that snowballs the way a good combo should. BUILD THE CHAIN Drag tiles from your hand onto the board and match pips to the open ends of your chain. Doubles don't extend the line — they branch it, and every one you land pushes your multiplier higher. Get boxed in with nothing legal to play and you're not stuck: you're blocked, just like real dominoes, and a relief tile keeps the round moving. SCORE THE COMBO In Boss rounds hit 'Play Chain' and watch your pips turn into Score × Multiplier. Long chains, stacked doubles, and enhanced tiles — Gold, Iron, Crystal, Prismatic, Charm, Slate — all pile bonuses on top of each other. Discard the tiles that don't fit your chain and hunt for the ones that do, all within a limited number of plays per round. DUEL FOR KEEPS Not every fight is a score attack. Duels put you across the table from a real rival: take turns playing matching tiles, draw from the boneyard when you're stuck, and race to empty your hand first. Choose Safe for a single, lower-stakes opponent, or Risky to face two rivals at once for a bigger payout — and lose a duel, and the run ends there. SEVEN BOSSES, SEVEN TWISTS Every act builds toward a boss tied to one of the seven double tiles, and each one bends the rules of the round in a different direction — smaller hands, no discards, capped chain length, locked pips, disabled double bonuses, and worse. The final boss, The Twin, turns the whole format on its head: a duel against two rivals at once, winner takes the run. RELICS, ANCIENT DOMINOES, AND A SHOP THAT REWARDS RISK Spend your winnings between fights on new tiles and relics that reshape how your chains score — big-chain builds, all-doubles builds, economy builds that turn cash itself into multiplier. Beat a boss and you'll walk away with more than bragging rights: unique, boss-exclusive dominoes that echo the fight you just won. RUN AFTER RUN No two hands play the same. Build around a stack of doubles one run and a lean, efficient chain the next, unlock new relics and tiles as you go, and see how far you can push a rack of dominoes past where anyone expects them to go.