Mobile game

Sum it UP

On the App Store: Sum it Up — Easy, Right?

Drag across number tiles to build a path. You may only step to orthogonally adjacent cells, and you can bridge across empty spaces you’ve already cleared, like stepping stones. When the sum of your path equals the target, those tiles clear and you score. Cleared cells stay empty—you plan the next move with what’s left on the board.

How to play

  1. Touch a tile and drag through adjacent tiles to extend your path.
  2. Release when the sum of the path matches the target sum shown on screen to clear.
  3. If the sum doesn’t match, nothing clears—lift your finger and try a new selection.

Game modes

Sum 10

The classic mode. The target sum is always 10. Tiles show values from 1 to 5. Score as much as you can in 90 seconds.

  • Clear multiple times in a row to build a combo and earn a score multiplier.

Rush 10

Target sum is still 10, but instead of a countdown clock you have a rush bar that drains. Clear before it empties; each clear refills the bar.

  • Every 3 clears, the bar drains faster.
  • The more bar remaining when you clear, the higher your score multiplier.
  • Unlike Sum 10, there is no combo bonus—only the rush-bar multiplier applies.

Sum 612

After each clear, the target sum changes to a random value from 6 to 12. Tile values, the 90-second limit, and combo rules match Sum 10.

  • Shifting targets keep each round feeling fresh and tactical.