Simple, minimalist and difficult. Two Digits is a perfect blend between insanity and happiness. You are given 9 numbers less than 100, and all you have to do is to choose two subsets with the same sum.
User reviews:
Mostly Positive (113 reviews) - 79% of the 113 user reviews for this game are positive.
Release Date: May 22, 2015

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Buy Equal Sums Complete Collection

Includes 4 items: Three Digits, Three Digits - Soundtrack, Two Digits, Two Digits - Soundtrack

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About This Game

Simple, minimalist and difficult. Two Digits is a perfect blend between insanity and happiness.

The objective is simple. You are given 9 numbers less than 100, and all you have to do is to choose two subsets with the same sum.

Just try it. See how difficult it is!


  • 250 puzzles, 11 level sets
  • Random mode, generate your own levels
  • Beautiful, calm UI
  • Steam Achievements

System Requirements

Mac OS X
SteamOS + Linux
    • OS: Windows XP
    • Memory: 128 MB RAM
    • DirectX: Version 9.0
    • Storage: 50 MB available space
    • OS: OS X 10.7
    • Memory: 128 MB RAM
    • Storage: 50 MB available space
    • Memory: 128 MB RAM
    • Storage: 50 MB available space
Customer reviews
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Mostly Positive (113 reviews)
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69 reviews match the filters above ( Mostly Positive)
Most Helpful Reviews  Overall
45 of 56 people (80%) found this review helpful
Not Recommended
6.4 hrs on record
Posted: December 17, 2015
Two Digits is a logic game about finding two equal sums of numbers in sets with nine numbers (lower than 100). Don't expect anything else, you won't get it. :)

- Good idea for a logic game.

- Achievements are gained only for level solving (with exception of one), there aren't any especially hard ones.

- 250 levels might sound great, though you might feel really bored after few tens of levels. It's just still the same without any innovation or perceptible gameplay change.
- Mouse control could be made more special for PC, not just quickly ported from smartphones and tablets. Why do we have to double-click if we can use left X right mouse button? Why can't we set controls?
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22 of 30 people (73%) found this review helpful
1 person found this review funny
Not Recommended
2.3 hrs on record
Posted: September 8, 2015
"Make two piles of numbers which have the same sum"

Firstly it's not a bad game concept at all. Two Digits is a solid but simple math puzzler. And a sequel named "Three Digits" is already out there, too. I just complain about the implementation.

250 levels which turn into boring after a while. Why is that so? I guess it's the lack of slowly raising difficulty. The levels seem totally mixedup in difficulty and solution category. Tho it's always the 3x3 matrix some puzzles intermediate have solutions like x = a + b (+ c). Even the last 3 levels are ridiculous easy. The dev should figure out what makes a puzzle easy or what makes it more challenging. And then bring them in a new order. It mustn't be that mass of levels. The experience would be much better I think.
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15 of 18 people (83%) found this review helpful
1 person found this review funny
7.3 hrs on record
Posted: August 11, 2015
Highly recommended. A great game where you use your addition skills to add a combination or partial combination of a set of nine numbers so that you have two of the same number to solve the puzzle. For example if the set included 22 and 17 and 33 and 6 you would have two 39's to solve the puzzle. It sounds a bit more confusing than it actually is. This would be a great game to play with your children or for adults who just enjoy a bit of mathematical challenge. The soundtrack is very soothing as well. Frankly steam needs more games like this that can be used as learning tools I can't get enough of them!
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21 of 30 people (70%) found this review helpful
1.3 hrs on record
Posted: May 22, 2015
So there are 9 numbers, out of those 9 you have to figure out what 3 of them will have the same sum as another 3 of them. 3 are not used in the solution. If you like math puzzles like this combined with the sort of relaxing music you would expect in a game like this you will like this game. The number of puzzles you get for the price is a good value. 2 suggestions - I'd like it if you could right click for one color and left click for the other color (as of now you need to click past the first color to get to the 2nd color) and multiple profiles or save slots.
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9 of 9 people (100%) found this review helpful
3.1 hrs on record
Posted: May 30, 2015
Initially, it was with some sadness that I lumped Two Digits into the "Not Recommended" category. Mostly, my verdict was based on (a complete lack of) difficulty. It was disappointing, because I like number puzzles, and conceptually this sounded like a fun idea. But after breezing through 250 levels in 2 hours, I was worried that the entire concept might be too easy... it's just basic addition after all. $4 can find a thrifty Steam shopper much more than 2 hours of enjoyment.

However! With the latest update, all of the levels have been remade, with easy solutions removed. While individual puzzles still won't take very long, they at least require actual thought now. Perhaps more importantly, this also shows that the developer is paying attention to community feedback and actively (and quickly) updating the game.

In the future, assuming additional levels are added, this will be an easy recommendation for those who enjoy this kind of game. For now, my "Yes" is a vote of confidence in the developer and the concept.
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8 of 9 people (89%) found this review helpful
1.7 hrs on record
Posted: May 24, 2015
EDIT: In light of the developer saying that updates removing all "easy" solutions to puzzles past level 15 will be removed, the important criticisms I had with this game are going to not apply anymore, so I will actually recommend this now. Expect an up-to-date review once all the levels have been replaced.

[s]I really want to like this game. I'm a puzzle fan, and quite enjoy math puzzles in particular. I think this game could be good. That said, the level design of this game has too many problems, as the game stands, for me to recommend this as is.

The goal of this game is, given 9 numbers, to find two groups with the same sum. Simple sounding. I think the intent is for this to be "harder than it seems," except that far too many of these puzzles has one number in the set which is the sum of 2 other numbers. It's slightly hard to find this sometimes, but too many levels can be solved immediately like this.

If that fails, finding any two pairs of numbers with the same difference (5, 7, 33, 35, for example) also solves a puzzle.

And then there's puzzles where two of the numbers are the same. At least 3 of them, if I remember right. One duplicate, other duplicate in different groups is a solution.

There's really no difficulty ramp-up at all in this game, as a result. I found the "all numbers are odd" part of the game far and away most enjoyable, since the sum of two odd numbers can never be an odd number, so they tended to require harder solution.

I guess that the problem is that anyone who actually wants a mathematical puzzle game is going to find this far too easy, and anyone who will find this challenging wouldn't want this game. If there were settings to possibly make the game harder, like requiring at least 2 numbers in both sets in a solution, or better crafting of levels to prevent x+y=z (and x=x) type levels, I can see myself being able to recommend this. As it stands, though, the puzzle design is too simplistic for me to give a thumbs up.[/s]

PS: As of the time I posted this, the last 3 achievements are broken. I've completed this game, but they don't load. Also, the ultimate puzzle's solve animation seems broken. A heads up to the dev.
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11 of 15 people (73%) found this review helpful
19.9 hrs on record
Posted: March 16
Prequel to the three digits game and really a version of the same game.

I said that was a fun little time waster in a bundle. This is too.
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23 of 38 people (61%) found this review helpful
6 people found this review funny
Not Recommended
0.4 hrs on record
Posted: December 24, 2015
I'm personally baffled by the positive reviews for this game. I guess there are just a lot of simple people out there.

When you brainstorm ideas for making a game, some you keep and some you throw out because they don't go anywhere. This game idea should've been thrown out.

Here's the idea behind this game: You have nine numbers. Pick two groups of those numbers that add up to the same amount. That's it. The gameplay does not get any deeper. Level 1 is literally the same as level 100, just with different numbers. With good game ideas, you find the gameplay expanding as the game goes on. This is just rote repetition. I can't imagine anyone enjoying it. If you do, you have an exciting career ahead of you as a cashier.

Some reviews say this game is educational, which I also don't understand. I'm not sure what these people could be learning. Did they not know how to tell if two numbers are equal before playing this? That could be it.

Bottom line, if you are 8 and need to practice your addition, or if you want to get into accounting for the thrills, buy this game. Otherwise, steer clear.
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6 of 6 people (100%) found this review helpful
4.5 hrs on record
Posted: August 3
Finally finish all 250 level !! :D


Math + puzzle game, is there any deadly combination beside these ? :D

luckily i love puzzle game and even more Math

must have item for people who loves math, seriously
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5 of 5 people (100%) found this review helpful
1 person found this review funny
1.1 hrs on record
Posted: August 25
The control is a bit clunky, I'd rather use LMB for Green and RMB for Red, than clicking LMB two times to get Red ones.

Otherwise, everything's good for puzzle game. Simple gameplay, minimalistic style and even have fun elements if you sits at front row in your math class.
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Recently Posted
2.2 hrs
Posted: September 27
Simple, and provides what it proposes to, but its concept is extremelly boring.
Helpful? Yes No Funny
0.4 hrs
Posted: September 26
Product received for free
Two Digits is a minimalistic number puzzle game with an extremely simple concept. Out of the nine displayed numbers you need to find two subsets that add to the same total.

I love math, but I didn't really enjoy this game much. There's no real depth to the puzzles and they get repetitive rather quickly. There's no proper difficulty progression either as the easy and the difficult levels are all mixed in together.

Not recommended unless you really enjoy simple puzzles.

The good:
- Clever concept for a puzzle

The bad:
- No real depth
- Gets repetitive quickly
- Poor difficulty progression
- Mouse UI could use some work
Helpful? Yes No Funny
5.4 hrs
Posted: September 15
I recommend it, but only because it's a good time-waster – not because it's all that great.

Two Digits involves clicking 9 numbers with the goal of equalizing their values. It basically depends on mathematics and interval recognition, and if you are good at these two skills you can beat this game in a few hours.

The problem with the game is that there isn't really any difficulty curve. Some early levels can take 10 minutes to complete as you struggle to determine which numbers can yield the solution; meanwhile, several of the later levels can be completed in a few seconds, clicking two numbers which obviously add up to a third number on the board. There was a stretch of 20 or so levels in the middle that consisted of me going "these two numbers are 10 apart, these are 20 apart, these are 30 apart. Done." Then, there was another stretch of 5 or 10 in the late game that functioned the same way.

There was never a moment where I needed all 9 numbers to solve the level, and that's kind of a problem. Early puzzles should be solvable with 2-4 numbers, but later levels ought to use 7, 8, or even all 9 numbers to solve. There's no real complexity that prevents you from solving the problem; no brain-wracking moment that stresses you out for thirty minutes. The only thing that prevented me from finishing it faster was eye fatigue from just staring at 9 numbers over and over.

So, I don't like the game very much, but I'm satisfied with my purchase and I do recommend it. After all, it IS a good way to pass a few hours, which is what I wanted. And perhaps it will present challenges to those people who aren't arithmetically inclined. To the rest of us, though, it's too simplistic, and doesn't have a difficulty curve.
Helpful? Yes No Funny
4.3 hrs
Posted: September 3
It may get boring for you after a couple of hours, once you have figured out how it works. Also, the music (initially pleasant) quickly gets a bit repetitive.

But still, it's a cute game for the time you spend on it, calming and enjoyable. Recommended as a cheap buy to pass a few hours of time.
Helpful? Yes No Funny
10.8 hrs
Posted: August 27
Two Digits is a great game for improving math skills and provides quite a bit of fun in the process. It's great for everyone, no matter how good your math skills are. I reccomend this for everyone, whether you are studying for math class or are just looking for a fun game to pass time.
Helpful? Yes No Funny
14.1 hrs
Posted: August 25
I bought Two Digits on sale a few weeks back- and in the time I've had it it has become a nice little companion to wind down in the evenings with. Easy, straightforward gameplay with 250 levels and a random generator mode for you to enjoy.

The levels DO get old and repetitive if you play for too long- I enjoyed a slow pace of 15-45 mins a day for this game, broken up into chunks. Handy if you're waiting for the kettle to boil etc.

I also feel like this game has changed the way I see and think about numbers? I've always been fairly confident in mental maths but this game added a whole new dimension to the way my brain adds things up :)

Cons- Music didn't play for me? That might just be my computer making an error though.

Would recommend- nice little timewaster and achievements are a big bonus!
Helpful? Yes No Funny
6.1 hrs
Posted: August 16
This is a really nice game in theory, but in practice the multitude of levels are rather repetitive. I got bored of it pretty quickly. Just completing for the achievements.
Helpful? Yes No Funny
8.1 hrs
Posted: August 15
Two Digits is a decent little puzzler, best enjoyed in small doses. It's not particularly difficult so I would recommend this for people who want to play for a few minutes every now and then to waste a bit of time rather than those looking for a challenge. There are about 240 levels split in to different 'sets' that have restrictions like only having odd or even numbers. When you are done with those you can always use the random level generator to keep playing.

I think the full price is acceptable since the random level generator adds a lot of replay value and it is a well polished game.
Helpful? Yes No Funny
5.6 hrs
Posted: August 4
This game is surprisingly fun for a game that's all about adding numbers and math. Obviously if you don't enjoy numbers or math then this game isn't for you, but for the low price tag it's definitely worth it for the 250 levels.

-Nice background music
-Simple design
-Challenging puzzles (In my opinion the toughest puzzles were the ones with only two digit numbers)

-No scoll bar on the menu makes the design feel bad when you have to click and drag all the way down the levels.
-Not really a con, but I think the game would be better if left click did one colour and right click did the other. It was a little tedious resetting the numbers everytime.
-Reset function felt clunky, instead of having the numbers dissapear and reappear I think it would be a little better to just reset the colour on all of them to take less time.

Overall though, the game was really fun and I really enjoyed it.

Final rating: 9/10
Helpful? Yes No Funny