Number Sums - Numbers Game: Test Your Math & Logic

Number Sums is a number puzzle game from Easybrain built around a simple idea: select the correct numbers and make every required total work at the same time.

Each puzzle contains a grid filled with numbers, along with target values around the board and inside colored regions. Your job is to identify which numbers should remain selected and which ones should be removed. The challenge comes from satisfying all of the row, column, and region requirements simultaneously.

Although the rules are straightforward, solving the more complicated boards requires careful calculation, deduction, and forward planning. Every level has one intended solution, so random guessing is not the best way to approach the game.

The current Google Play listing shows 5M+ downloads and a 4.3-star rating with more than 114,000 reviews, demonstrating a substantial player base.

Number Sums Gameplay Overview

The gameplay revolves around selecting numbers that add up to specific target values.

A typical puzzle presents several numbers inside a grid. The numbers must be evaluated in relation to three different types of constraints:

• Rows
• Columns
• Colored regions

The total of the selected numbers in each section must match its corresponding clue.

This creates an interesting chain of deductions. Selecting a number may help one row while making a column impossible, so every decision has to be checked against the rest of the board.

The game uses a circle-and-erase system. You can circle numbers you want to keep and erase numbers that cannot be part of the solution. A toggle lets you switch between the two modes.

How to Play Number Sums

1. Examine the Target Numbers

Start by looking at the totals shown beside the rows and columns. Also check the values displayed inside colored regions.

These numbers tell you exactly what the selected tiles in each section must add up to.

2. Find Impossible Numbers

Some numbers can immediately be ruled out.

For example, if a number is already larger than the required total for its row or region, it cannot be included in that solution. Removing obvious candidates makes the remaining puzzle easier to analyze.

3. Circle Possible Answers

Use the circle mode to mark numbers that appear likely to belong to the final solution.

Don't treat every circled number as confirmed immediately. Some candidates may need to be reconsidered after another row or column becomes clearer.

4. Erase Numbers You Don't Need

Switch to erase mode when you have enough evidence to eliminate a number.

The more impossible options you remove, the easier it becomes to see the relationships between the remaining numbers.

5. Check Every Constraint

A solution isn't correct just because one row reaches its target.

The selected numbers must satisfy the corresponding rows, columns, and colored regions at the same time.

6. Complete the Unique Solution

Every level is designed around a single solution. Continue narrowing the possibilities until the entire board works together.

Main Features

Challenging Number Puzzles

Number Sums offers a large collection of arithmetic and logic puzzles designed to make you think carefully about combinations of numbers.

Multiple Board Sizes

The game includes different board types ranging from 3×3 to 10×10, giving the puzzles room to become substantially more complex as the grid expands.

Row, Column and Region Logic

Unlike a basic addition exercise, each move has multiple consequences because numbers must satisfy several overlapping conditions.

One Solution Per Puzzle

Each level has one possible solution, encouraging logical deduction rather than random trial and error.

No Time Limit

There is no countdown forcing you to rush through a puzzle. You can take your time, inspect the board, and work through the possibilities at your own pace.

Helpful Hints

Hints are available when you get stuck and need assistance finding your next move.

Minimalist Presentation

The game uses a clean, straightforward puzzle presentation that keeps the numbers and targets at the center of the experience.

Offline Play

Google Play currently lists Number Sums as an offline game, making it suitable for puzzle sessions when an internet connection isn't available.

Number Sums Difficulty

The difficulty is driven less by complicated mathematical formulas and more by the number of possibilities you need to consider.

Small boards are easier to understand because there are fewer numbers and relationships to track. Larger boards can require considerably more concentration because a single selection may affect several constraints.

The game is therefore suitable for casual players who want quick arithmetic challenges as well as puzzle fans who enjoy spending more time finding a perfect solution.

Number Sums Strategy Guide

Start With the Smallest Totals

Low target numbers usually provide fewer possible combinations.

If a row needs a very small total, examine its smallest numbers first. This can often eliminate several possibilities immediately.

Eliminate Numbers That Are Too Large

If a number is greater than the target total for a particular section, it cannot be part of that section's solution. Removing these numbers early reduces the number of possibilities you need to consider.

Use Odd and Even Logic

The official game tips point out that parity can help with deductions. For example, if a row or column contains only one odd number while its target is even, that odd number can sometimes be eliminated.

Look for Forced Combinations

When a target can only be reached using one particular combination of numbers, you've found an important clue.

Mark those numbers and then examine what their selection means for the intersecting columns and regions.

Don't Solve Rows in Isolation

One of the biggest mistakes beginners make is solving each row independently.

A number that looks correct for a row might make its column impossible. Always consider the entire board.

Recheck Colored Regions

Colored regions add another layer of constraints. Even if all the rows appear correct, the puzzle isn't solved unless the colored areas also reach their required totals.

Advanced Number Sums Tips

Work From Constraints

Rather than scanning randomly across the board, begin with the areas that have the fewest possible combinations.

A narrow set of possibilities creates stronger deductions.

Use Cross-Checking

Whenever you confirm a number, immediately check every row, column, and region affected by it.

This prevents you from building an incorrect solution several moves deep.

Think in Combinations

Don't focus only on individual numbers. Ask:

Which combinations can produce this exact target?

Once you know the possible combinations, other clues can help eliminate them one by one.

Use the Largest Numbers Carefully

Large values can be particularly useful when the target is close to them. If adding even the smallest remaining number would push the total above the target, the larger number can be ruled out. The official game tips specifically encourage using this type of comparison.

Don't Guess Too Early

Because each puzzle has one solution, guessing can create unnecessary confusion. Use the available clues to eliminate possibilities until a selection becomes logically unavoidable.

Beginner's Guide

If this is your first time playing Number Sums, don't worry about solving the entire board immediately.

Start with these steps:

1. Find the smallest target totals.
2. Remove numbers that are obviously too large.
3. Look for simple two-number combinations.
4. Check how your choices affect intersecting columns.
5. Use colored regions as additional clues.
6. Recheck the entire board before committing to your final solution.

The most important lesson is to think about relationships rather than individual numbers.

Mental Math and Logic Practice

Number Sums is designed around mental arithmetic and logical deduction. The developer describes it as a way to practice addition, arithmetic, and logic through progressively challenging number puzzles.

The game shouldn't be treated as a replacement for formal mathematics education, but it can provide an entertaining way to practice simple numerical reasoning.

Game Modes and Puzzle Types

Number Sums is primarily a single-player puzzle experience. Google Play currently categorizes it under Puzzle, Logic, and Casual, and lists it as single-player and offline.

The main variation comes from board size and puzzle complexity rather than traditional multiplayer modes.

As boards become larger, there are more possible combinations to examine and more interactions between rows, columns, and regions.

Player Experience

The biggest strength of Number Sums is the simplicity of its core idea.

You don't need to learn complicated controls. The challenge comes almost entirely from thinking through the numbers.

That makes it a good choice for short sessions when you want something more mentally engaging than a purely casual game.

However, advertising is a recurring criticism in player reviews. Some verified reviews specifically complain about ads appearing during puzzles rather than only between levels. Easybrain has acknowledged this feedback on Google Play.

Another player concern is that numbers can become smaller on larger boards, making them harder to read. Easybrain has acknowledged that there currently isn't an option to enlarge the numbers.

Ads and In-App Purchases

Number Sums is free to download and currently contains advertisements and in-app purchases.

The advertising model has attracted criticism from some players, particularly regarding ads appearing during gameplay. This is worth considering if you prefer uninterrupted puzzle sessions.

Latest Update

The current Google Play listing shows August 26, 2026 as the latest update date.

The latest release notes mention performance and stability improvements, along with continued feedback from players about improving the experience.

Technical Details

• Game: Number Sums - Numbers Game
• Developer: Easybrain
• Platform: Android
• Genre: Puzzle, Logic, Casual
• Mode: Single player
• Offline: Yes, according to Google Play
• Content Rating: Teen
• Downloads: 5M+
• Rating: 4.3 stars
• Reviews: 114K currently displayed
• Monetization: Ads and in-app purchases
• Board sizes: 3×3 through 10×10
• Latest listed update: August 26, 2026

Pros and Cons

Pros

• Simple rules that are easy to understand
• Strong combination of math and logic
• Multiple board sizes
• One solution for each puzzle
• No time limit
• Helpful hints
• Minimalist puzzle presentation
• Single-player gameplay
• Offline support
• Good for short or extended puzzle sessions

Cons

• Ads can interrupt gameplay
• Larger boards can make numbers harder to read
• The game may feel repetitive for players who prefer action or narrative games
• Primarily focused on arithmetic and deduction rather than broader puzzle variety

Who Should Play Number Sums?

Number Sums is a good fit for players who enjoy:

• Number puzzle games
• Math games
• Mental arithmetic
• Logic puzzles
• Brain-training games
• Addition games
• Casual puzzle games
• Offline puzzle games
• Sudoku-style logical thinking
• Kakuro-style numerical challenges
• Relaxing single-player games

It is especially appealing if you like puzzles that give you enough time to think instead of forcing you to solve everything against a countdown.

Number Sums vs. Other Number Puzzle Games

Number Sums sits between traditional arithmetic puzzles and logic games.

Unlike a basic number-matching game, you aren't simply looking for identical values. Every selected number must contribute to several constraints.

The game itself compares its concept with titles such as Number Match and Kakuro, while Google Play also lists games such as Sudoku and Killer Sudoku among similar experiences.

The key distinction is the combination of row totals, column totals, and colored-region totals. This makes Number Sums feel closer to a deduction puzzle than a conventional arithmetic quiz.

Expert Rating

Overall: 8.6/10

• Gameplay: 9/10
• Puzzle Design: 9/10
• Logic Challenge: 9/10
• Accessibility: 8/10
• Replay Value: 8/10
• Presentation: 8/10
• Monetization Experience: 7/10

The core puzzle design is strong and easy to learn, while larger boards provide meaningful increases in complexity. The main weakness is the advertising experience reported by some players.

Final Verdict

Number Sums - Numbers Game is a smart and approachable puzzle for anyone who enjoys combining arithmetic with logic.

Its rules are simple: select the correct numbers, make every row and column reach its target, satisfy the colored regions, and complete the puzzle's unique solution. But as the boards become larger, the number of possibilities increases and careful deduction becomes essential.

The absence of a time limit is particularly welcome. Instead of racing against a clock, you can inspect the board, test possibilities mentally, and gradually narrow down the correct answer.

If you enjoy number puzzles, math games, logic challenges, mental arithmetic, Sudoku-style deduction, or Kakuro-inspired gameplay, Number Sums is an excellent game to add to your puzzle collection.

Frequently Asked Questions

Is Number Sums free to play?

Yes. Number Sums is free to download, but the current Google Play version contains ads and offers in-app purchases.

What is the goal of Number Sums?

The goal is to select numbers so that the totals in every row, column, and colored region match the clues provided on the board.

Does each puzzle have one solution?

Yes. The game's description states that each level has only one possible solution.

Are there different board sizes?

Yes. Google Play states that players can unlock different board types ranging from 3×3 to 10×10.

Does Number Sums have a time limit?

No. The game provides puzzles without a time limit, allowing you to take as long as you need.

Can I play Number Sums offline?

Yes. Google Play currently lists the game as offline.

Does Number Sums help with mental math?

The game is specifically designed around mental arithmetic and logic, with puzzles focused on addition and numerical deduction.

Does Number Sums have hints?

Yes. The game provides hints to help players when they become stuck.

What happens if a puzzle becomes difficult?

Instead of guessing, look for impossible numbers, examine small target totals, compare odd and even values, and use intersections between rows, columns, and colored regions.

Is Number Sums suitable for beginners?

Yes. The basic mechanics are straightforward, while the larger boards provide additional difficulty for experienced puzzle players.