ZeroSum

About Zerosum

Zerosum is a clever math puzzle that mixes number addition with match-3 gameplay. Instead of simply swapping blocks around, every move changes the numbers on the board. Your goal is to create a row or column of at least three matching number blocks and keep those matches coming for as long as possible.

To make a move, select a numbered block and move it into one of the blocks next to it. The two numbers are added together, leaving you with a new value. There is one important twist: if the answer is greater than 9, the tens digit is removed. For example, combining 7 and 8 gives you 15, so the resulting block becomes 5.

Plan Your Numbers Before You Move

Zerosum starts to get interesting when you realize that every addition also changes the layout of the board. You might combine two numbers to create the exact block you need, only to discover that you have placed it in the wrong position for a match.

Whenever you make a move, a new number from the upcoming queue fills the empty space. That means you can look ahead and use the next blocks as part of your strategy. Rather than making the first match you notice, it often pays to think about what the board will look like after your move.

Use Zero to Your Advantage

Zero is especially useful because it works as a wildcard and can match with other numbers. Saving a zero for the right moment can help complete a difficult row or column when the numbers you need are not lining up properly.

Your supply of new blocks is limited, so you cannot keep making moves forever without creating matches. Successful matches help you earn more blocks and stay in the game, while later levels make this increasingly difficult.

More Than a Regular Match-3 Puzzle

The simple addition rules give Zerosum a different feel from most puzzle games. You are not only looking for matching tiles—you are working out which numbers to combine so you can create the matches yourself.

There is also a Burst Mode that changes how matches work for a short period, allowing connected matching blocks to count instead of requiring everything to sit neatly in a straight row or column. It adds another layer to a game that already rewards careful planning.

Zerosum is easy to understand once you make your first few moves, but keeping a good run going is another story. The board is constantly changing, your supply of blocks matters, and one smart addition can set up several useful matches. If you enjoy number games with a proper puzzle element, this one gives you plenty to think about.