SUM+SUM

About SUM+SUM

SUM+SUM is a number-based logic puzzle where a numerical grid awaits your solution. The goal is straightforward but demanding: keep only the numbers that make each row and column add up to its specified target value, and eliminate everything else. Balance is the core challenge — every move either brings the grid closer to harmony or throws it further off.

Several scenes show a 4×4 grid built from rounded square tiles in red, green, off-white, and pale orange. A progress bar appears at the top of the grid UI across multiple views.

How to Play SUM+SUM: Remove Numbers to Match Row and Column Sums

Each puzzle presents a grid of numbers alongside target sums for every row and column. The task is to remove the extra numbers so that whatever remains in each row and column adds up exactly to the value shown. Logic guides every decision — work through the grid to find which numbers must stay and which must go.

Click States

Controls

• 1 click: Mark a number to keep
• 2 clicks: Delete a number
• 3 clicks: Reset a number's state

Games You Might Like

If SUM+SUM's grid-based number challenges appeal to you, the broader collection of puzzle games on Playgama offers a wide range of logic and problem-solving experiences to keep your mind working.

For more number-focused challenges in the same vein, the math games category is a natural next stop, packed with titles that put arithmetic and numerical reasoning front and center.