Numbers Puzzle 2048 is a fun arithmetic puzzle about stacking number tiles. It takes the doubling idea of 2048 and turns it into a dropping game.
Tap a column to send the next tile there. When it lands on or next to a tile with the same number, they join to make a new tile with double the number. Two 2s make a 4, two 4s make an 8, and so on. Combine as many tiles as you can to keep making room for new ones. If the columns fill up, the game is over.
A great brain game that also helps with doubling numbers in your head.