Draw a line. A single line. How complex can that be?
User reviews:
Overall:
Very Positive (190 reviews) - 95% of the 190 user reviews for this game are positive.
Release Date: Feb 3, 2015

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$1.99
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Reviews

“With its minimalist aesthetic, great music and sound design, and endlessly challenging puzzles, Unium is a real pleasure to play.”
4.5 / 5 – GameRant

“a quick pick me up type of game (that could also trap you for hours, mind you)”
AndroidCommunity

“Unium is a great little puzzler, presenting an extremely simple concept that’s easy to grasp yet incredibly challenging to master.”
8/10 – The Refined Geek

About This Game

Your task is to draw a line. A single line. How complex can that be?

Start with one tile and trace a line to the next, then the next. Each tile you pass over flips from black to white, or back again. Using only a single line, can you flip all the black tiles?

The simplest puzzle can have hundreds of solutions, and Unium features over 100 levels to solve your way through. Unlock harder puzzles by solving easier ones, learn what works and what doesn't, and solve puzzles in multiple ways to earn achievements. Even better, use the built-in level editor to create your own puzzles, and share them on Steam Workshop! Unium is a fantastic pick up and play puzzle game that can entertain for a minute or an hour.

System Requirements

Windows
Mac OS X
SteamOS + Linux
    Minimum:
    • OS: Windows 7
    • Processor: 1GHz processor
    • Memory: 1 GB RAM
    • Graphics: 3D graphics card with 512Mb
    • DirectX: Version 9.0
    • Storage: 50 MB available space
    Recommended:
    • OS: Windows 7
    • Processor: 2GHz Dual Core processor
    • Memory: 2 GB RAM
    • Graphics: 3D graphics card with 512Mb
    • DirectX: Version 10
    • Storage: 50 MB available space
    • Sound Card: DirectX Compatible Sound Card
    Minimum:
    • OS: Snow Leopard 10.6.8 or later
    • Processor: Intel Core Duo
    • Memory: 1 GB RAM
    • Graphics: 3D graphics card with 512Mb
    • Storage: 80 MB available space
    Recommended:
    • OS: Snow Leopard 10.6.8 or later
    • Processor: Intel Core Duo
    • Memory: 2 GB RAM
    • Graphics: 3D graphics card with 512Mb
    • Storage: 80 MB available space
    • Sound Card: Compatible Sound Card
    Minimum:
    • OS: Ubuntu 12.04 LTS
    • Processor: 1GHz processor
    • Graphics: 3D graphics card with 512Mb
    • Storage: 80 MB available space
    Recommended:
    • OS: Ubuntu 12.04 LTS or later
    • Processor: 2GHz Dual Core processor
    • Graphics: 3D graphics card with 512Mb
    • Storage: 80 MB available space
    • Sound Card: Compatible Sound Card
Customer reviews
Customer Review system updated! Learn more
Overall:
Very Positive (190 reviews)
Recently Posted
EranKrief
( 2.2 hrs on record )
Posted: June 22
great game
Helpful? Yes No Funny
Yoshi
( 4.0 hrs on record )
Posted: June 2
Product received for free
As a puzzle enthusiast, I have came across many path-like puzzle games. Usually they seem alike, but have a small change in the formula to make them unique. That's the beauty of puzzle games. You change something small, and the bigger picture is that much different.

Unium is a basic path puzzle game involving black and white squares, much like the Polarium series. I had spent numerous hours playing Polarium, and as such I have developed a fondness for games similar to it.

Much like the hit smartphone game Flow, and the infamous LYNE, it relies on going through a path. Unfortunately, a setback with this sort of game is that you begin to see a pattern, which assists you in completing every puzzle. There is a bit of strategy involved, but not enough to keep strategists hooked on the game. You can probably solve nearly any puzzle just by figuring out where to start, which usually is incredibly obvious. (e.g having one block that can't be accessed when starting anywhere else)
The game is fairly easy but is entertaining and has a vast amount of workshop puzzles. It's worth the price. Although I got mine free, I would have had no problem paying the actual price for this game.

It makes me hope that Kittehface Software makes more puzzle games in the future. Cuz I'd totally buy the hell outta that.
Helpful? Yes No Funny
Mentone
( 2.6 hrs on record )
Posted: May 7
Great game to kill time and have some fun :)
Helpful? Yes No Funny
Crystal
( 4.2 hrs on record )
Posted: March 16
Draw with one line puzzle. This is a nice minimalist game with simple mechanics and perfect controls both on PC and mobile devices.
It may seem easy at the very beginning but it's definitely not: difficulty increases rather quickly. While first puzzles are solvable in less than a minute, the last section brings the real challenge. Solving it without in-game hints or guides will require tens of hours.
I am personally not a fan of sitting for 30+ minutes on single puzzle without any progress (there are 60 of them in the last section), so I used help for the advanced difficulty. It just wasn't for me. But the first three sections are totally doable and I recommend them to everyone. 3-4 hours to solve everything from easy to normal included. Last section - only for real puzzle-addicts as it require 10-∞ hours to solve everything. I admire people who created these levels and the one who solved them without any hints.

P.S. Even after the completion of the game you might eventually find yourself playing and enjoying this game again :)
Helpful? Yes No Funny
S0YxSauCe
( 4.1 hrs on record )
Posted: February 9
Line based puzzle game. Personally I don't recommend playing this kind of puzzle game because it does not encourage critical thinking. Its more of trial and error type of puzzle. But its still a great puzzle game to brainstorm too.
Helpful? Yes No Funny
i73iya73i
( 2.8 hrs on record )
Posted: February 2
This is a solid interactive puzzle in principle quite similar to LYNE. Some math related skills from Minesweeper and Rubic's cube could be utilized here too. Its black and white color scheme is surely dull so that nothing distracts you from pure spacial awareness logic. We need to interconnect a massive of squares with one pathway avoiding wrong squares and probably including the neutral ones. It offers clear intuitive rules and minimal interface which feels very 'tactile' with subtle use of animation and effects. It would be a proper addition to every game collection, for touchscreens as well.

Хорошая интерактивная головоломка по принципу схожая с ЛЫНИЕЙ. Также могут пригодиться математические навыки Сапера и кубика Рубика. Скучная черно-белая цветовая схема не отвлекает пользователя от чистой логики пространственной ориентации. Нам необходимо объединить массив квадратов одним маршрутом, избегая неправильных и возможно включая нейтральные. Здесь ясные, интуитивно понятные правила и минималистичный интерфейс, хорошо "тактильно" ощущаемый благодаря изящному применению анимаций и эффектов. Будет достойным дополнением любой игровой коллекции, и для телефона тоже.
Helpful? Yes No Funny
Steve
( 4.1 hrs on record )
Posted: January 12
It's a puzzle game where you draw a line.

10/10
Helpful? Yes No Funny
[FM] RastafariPower
( 13.2 hrs on record )
Posted: January 11
Good minimialistic game, puzzles are really brain challeging (ofcourse the advanced ones, the rest is rather easy). For this price (I've got my from sale though) definitely worth a try.
Helpful? Yes No Funny
weasel75
( 1.1 hrs on record )
Posted: January 7
Very relaxed puzzler, with the music adding to the nice vibe.

The interface (PC) is straight forward: click to start the drawing and hold mousebutton to drag the path/line from there.

Playing around with the controls, one might find out that one can stop dragging at any point. Later the current path/line can be picked up where left.
With "Quick Erase" enabled, a single click on a field will backtrack the current path to that field.
Helpful? Yes No Funny
Mr. Jacobs
( 0.2 hrs on record )
Posted: January 4
Minimalistic Puzzles.
Relaxing Music.
Draw a line.

https://www.youtube.com/watch?v=8FqfqFxVPxY
Helpful? Yes No Funny
Most Helpful Reviews  In the past 30 days
1 of 1 people (100%) found this review helpful
Recommended
4.0 hrs on record
Posted: June 2
Product received for free
As a puzzle enthusiast, I have came across many path-like puzzle games. Usually they seem alike, but have a small change in the formula to make them unique. That's the beauty of puzzle games. You change something small, and the bigger picture is that much different.

Unium is a basic path puzzle game involving black and white squares, much like the Polarium series. I had spent numerous hours playing Polarium, and as such I have developed a fondness for games similar to it.

Much like the hit smartphone game Flow, and the infamous LYNE, it relies on going through a path. Unfortunately, a setback with this sort of game is that you begin to see a pattern, which assists you in completing every puzzle. There is a bit of strategy involved, but not enough to keep strategists hooked on the game. You can probably solve nearly any puzzle just by figuring out where to start, which usually is incredibly obvious. (e.g having one block that can't be accessed when starting anywhere else)
The game is fairly easy but is entertaining and has a vast amount of workshop puzzles. It's worth the price. Although I got mine free, I would have had no problem paying the actual price for this game.

It makes me hope that Kittehface Software makes more puzzle games in the future. Cuz I'd totally buy the hell outta that.
Was this review helpful? Yes No Funny
Most Helpful Reviews  Overall
36 of 36 people (100%) found this review helpful
1 person found this review funny
Recommended
13.3 hrs on record
Posted: March 28, 2015
An incredibly simple mind-bending puzzle game that will draw you in and take all of your free time. After picking it up, I had trouble putting down, even when frustrated with the later puzzles.

The game itself is fairly easy to understand, and the basic mechanics are easy to grasp. However, despite the simplicity of understanding the game, mastering it is a completely different story. The game starts you off on the Beginner difficulty, but as you progress you will eventually unlock Easy, Medium, and then Advanced. The puzzles in Beginner are easy to understand and can be solved in minutes, but as more mechanics of the game are revealed to you (namely neutral tiles and crossing lines), the puzzles start to suck away more and more time. Some of the Advanced puzzles eventually ended up taking hours of my time as I struggled to figure out what to do. Despite the difficulty, they remained enjoyable.

The achievements, for all of those that enjoy 100%ing games, are split between two different kinds: complete X number of puzzles of a certain difficulty, and completing a certain puzzle in a certain way. The second type of achievement listed is actually a ton of fun to go for, as it requires you to go back to a familiar puzzle and look at it in a new way. These special challenges presented through the achievements gives you even more time with the game, although obviously not required to do so.

Overall, Unium is a complete blast to play and your time will disappear before you know what's happening. For the low price tag, even if you complete the Beginner/Easy puzzles, you'll be incredibly satisfied with the purchase. Unium is a fantastic, beautiful puzzle game that everybody should give a try at least once.
Was this review helpful? Yes No Funny
19 of 19 people (100%) found this review helpful
1 person found this review funny
Recommended
17.4 hrs on record
Posted: March 29, 2015
If you've played Lyne and liked it. You'll like this. Vice Versa!

A simple, fun, and at times hour-eatingly-mindstrating puzzle solving game. Just as it says, the rules are so simple - you have one line to draw. It lures you into a false sense of security with increasingly hard levels and suddenly you find yourself spending hours engaged in solving a puzzle which eludes you.

If you're an achievement hunter then you can complete all of them in <10hours. (Probably much less!) But, you won't have finished solving all the puzzles by that point!
Was this review helpful? Yes No Funny
17 of 18 people (94%) found this review helpful
1 person found this review funny
Recommended
3.5 hrs on record
Posted: June 21, 2015
"Fillup patterns in a single line"
Another brilliant puzzle game by Kittehface Software.
After Transplan I was looking forward to play this basic outline pattern puzzler. But it's not so simple as I thought. You can overlap your line, use neutral fields and set your start point by yourself. That make some solutionfinding even more complicated. But still enjoyable to play. The neverending soundtrack loop is also nice.
Was this review helpful? Yes No Funny
12 of 12 people (100%) found this review helpful
1 person found this review funny
Recommended
23.3 hrs on record
Posted: April 19, 2015
This game was a blast. You can play it whether you have a little or a lot of time. A warning though - it is addictive so "a little time" can easily turn into a lot if you have nowhere to be.

There's nothing bad to say really. You'll only not like Unium if you're impatient or not into puzzle games.

The difficulty ramped up well - you'll probably breeze through the Beginner and Easy levels, then start slowing down mid-way through Medium until you find yourself spending potentially hours to crack some Advanced levels (the bulk of the game is in Advanced).

Half of the achievements also give some incentive to re-do a few levels with more constraints, giving them some new life.

The music provided a nice, unobtrusive ambience that worked even for hours of play at a time.

Unium is very polished for an indie game. The UI, sound, achievements, level design, and length all feel perfectly cohesive. And it's 2 bucks!
Was this review helpful? Yes No Funny
16 of 20 people (80%) found this review helpful
4 people found this review funny
Recommended
6.2 hrs on record
Posted: March 27, 2015
Pretty entertaining game with a simple enough task - draw a single line to turn all black tiles white - and a fair dose of puzzle (starting from the Medium levels anyway). Perfect for those days when you just don't feel like using more than one hand and half of your brain.
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11 of 11 people (100%) found this review helpful
Recommended
5.8 hrs on record
Posted: September 10, 2015
This space-filling path simulator is very eloquent and well-polished. Good music, good visuals, good sound effects, and good puzzle design. With about a hundred puzzles and workshop support for more, it's a respectable entry in the abstract casual puzzle genre.

My only complaint is that it doesn’t do a good job of teaching you how to play it. Learning to draw the standard space-filling paths is simple enough – there’s only one principle to learn, and that is to never create more than one dead-end when drawing the path. This is adequate up to the “medium” puzzles, but upon entering the “advanced” puzzles, the game starts requiring you to cross the streams. Some black squares are now closed off behind formations of white squares, and you will be required to flip some of the white squares to black and then back to white by drawing crossroads through them. This introduces a handful of new principles to learn, but the game doesn’t teach them to you and isn’t structured to slowly demonstrate them one at a time. This will likely leave casual puzzlegoers relying mostly to trial-and-error until they find the solution on accident, and achievement hunters losing patience quickly and loading up a FAQ. (I’ll freely admit to looking up the answers for about a dozen of the puzzles.)

I feel like this game would have been one of my favorite causal puzzle games if it had about fifty more puzzles, and the “advanced” category had been split off into an additional, harder difficulty to teach all the flipping tricks in a reasonable order. As it is, the game’s certainly not bad, but just be warned that it might leave you with an empty feeling if you’re a particularly impatient gamer.
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8 of 8 people (100%) found this review helpful
Recommended
2.9 hrs on record
Posted: March 29, 2015
Unium is a puzzle game with a simple concept: draw a line and turn all the blocks white. It starts out extremely basic, but soon becomes painfully difficult.
Especially on the Advanced level, where nearly every level requires you to cross lines multiple times and really think outside the box, you'll need a lot of time to solve the puzzle.

Recommended for any puzzle game fan!
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7 of 7 people (100%) found this review helpful
1 person found this review funny
Recommended
5.9 hrs on record
Posted: March 30, 2015
A simple yet supremely challenging maze puzzle. The game is cheap and unoffensive, good buy.
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6 of 6 people (100%) found this review helpful
Recommended
2.1 hrs on record
Posted: April 8, 2015
This here is the sort of game Euler probably figured out how to determine whether its solvable or not. Simple and hard, as if a really slow deliberate snake where you need to cover everything before eating yourself.
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