Your goal is to bring the golden numbers down to zero and remove them from the grid. Swipe to move. Push the numbered blocks onto the golden number to bring it down to zero! Push numbers of the same value together to double them up.

In later levels, some tiles will have a number on them. You can push numbers over these tiles to change their values. Numbers that move over a green number will increase their value, while moving over red numbers will decrease their value. You can only slide one cube over these numbers once, and then they're gone forever!

If you make a mistake, tap the yellow button in the upper right corner to undo your last move. If you're stuck, tap the red button in the upper right corner to restart the whole level.

How to play SumMerge on your phone

To play SumMerge easily any time, you can add it directly to your phone as an app. It’s a great way to play without worrying about losing your game save data.

For iOS devices, simply tap the "Share" icon in Safari and select "Add to Home Screen". For Android devices, tap the “Menu” icon and select "Install App".