Stack Up: Blocks

Fill rows and columns to clear them, and stack matching numbers to make them grow. A 1 and a 2 make 3, two 6s make 12. Grow big tiles first for a huge score.

Stack Up is the block puzzle where every block has a number, and a piece can land on top of the blocks it matches.

Drag pieces onto the 8×8 board. Fill a whole row or column and it clears. Run out of room and the game is over. So far, so familiar. But drop a 2 onto a 1 and it becomes a 3. Drop a 6 onto a 6 and it becomes a 12. Stacking saves space when the board is crowded, and turns small numbers into big ones.

BIG NUMBERS, BIG DECISIONS Big tiles are hard to stack on, so they can box you in. Clear them early to stay safe, or grow them first, because a cleared line earns every number in it. A row full of 96s is worth far more than a row of 1s.

SEE EVERY MOVE BEFORE YOU MAKE IT As you drag, the board shows exactly where the piece will land, which tiles will merge and what they will become, which lines will clear, and how many points the move will score. No hidden chain reactions, no surprises.

CELEBRATE EVERY CLEAR Confetti, combos and cheers. Clear two, three or four lines at once, keep clearing turn after turn to build a combo, and empty the whole board for a perfect-clear bonus.

POWER-UPS Earn a power-up every 10 lines. The Hammer smashes a tile, the Splitter halves a big one, the Wild upgrades any tile where it stands, and Undo takes back your last move.

A NEW PUZZLE EVERY DAY The Daily gives everyone the same pieces. Play it once for the leaderboard, share your result, and keep your streak going.

MORE

• Game Center leaderboards and achievements
• Stats for every game, and a histogram of the tiles you reach
• Tap to Place for one-handed play and VoiceOver
• Reduce Motion, sound and haptics settings
• Plays offline

Stack Up is free to play, with adverts. Remove Ads is a single optional purchase.