The goal of NumStack is to build the biggest number block possible by stacking a steady stream of falling blocks. Use the following moves to place and arrange blocks: single tap, double tap, swipe up or swipe down.
Two blocks of equal value when placed on top of each other, merge to make a new block of combined value. If you are running out of game space, try to make a row of blocks consisting of equal value and clear the row.
Climb the ranks in the leaderboards by stacking big blocks and unlock challenging medals!