Kotoro – Semidome Inc.

Last updated on February 4th, 2026 at 04:30 am

Kotoro – Entertainment Game Review

Kotoro Screenshot

Kotoro is a Entertainment/Strategy/Puzzle game from Semidome Inc., first launched in 27th March 2014.
It’s rated 4+ and currently has 119+ ratings on the App Store.

What Makes Kotoro Stand Out

"The visuals in Kotoro are simply beautiful." – AppAdvice

"Based on a simple but effective principle." – MacGeneration

"Something different to do at every turn." – 148Apps

Featured by Apple as one of the Best New Games

Kotoro is the first atmospheric puzzle game about color mixing based on the rules we all learn as children. Your objective is simple: Become a certain color by mixing with others.

  • 8 Chapters, 96 puzzles: Each chapter explores a new idea such as subtraction, replication or time
  • No Ads. No In-App Purchases.
  • Atmospheric soundtrack powered by 7 talented musicians from around the world
  • Fully localized for French, Chinese, Japanese and Spanish
  • Sync your game progress with iCloud
  • Minimalist, dreamy and beautiful
  • Ambient and relaxing experience

This Entertainment game offers engaging gameplay and regular updates for mobile players.

Player Feedback

As a newer release, Kotoro is building its player community. Early feedback suggests .

Recent Updates & Development

Latest Update: 30th May 2025

Recent improvements include:

  • Support for new devices

Download & Availability

Kotoro is available through the official App Store for iOS devices.

Get Kotoro on App Store

Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.

Compatible with iPhone and iPad devices.

Player Experience Highlights

Community Insight:

This game is very easy to understand, but very difficult to solve. They introduce new mechanics often, and let you skip levels. The game gets extremely difficult, if that is something you enjoy.


This is a 5-star game, but the music never plays for us on the iPhone. It works great on the iPad.


Hi. When we open the Kotoro app on our Iphone 7 a pop up says " app will not work with newer versions of IOS please contact developer. " When IOS 11 is released later this year Apple will remove support for 32 bit apps. Future IOS updates will not be supported. If this does not affect this app disregard . Otherwise this app may no longer be supported unless you update to 64 bit version. Do not want to loose this app please update. Thanks.


This game is simple to grasp, easy to understand, and fun to play. Great job, outstanding.


It really makes you think, the visuals are beautiful.


This isn't a typical guess and check puzzle game that you find on the App stores among us; this is an honest to goodness logic puzzle that requires you think 3, 4, 8 steps ahead if you actually want complete the game in a timely manner. Just checked the game center and it tells us we completed the game with 392 combinations. We're betting the minimum number of combinations is around 320, and probably 2.5 hours to do so. (There are currently 72 stages with average 5 objects to it (350 moves), so that may be underestimating it)). Hope every one enjoys and we'd love to hear more from others about how many color changes it took them to complete the game (It's in game center).


Relaxing and challenging color mixing game. Usually we get it right by trial and error or just letting the orbs swirl and blend. It does make us think. Great game, try it.


Takes a lot more thought as you level up. We like it. Never had any glitches.


The music and visuals of Kotoro are beautiful and it has our favorite kind of game play: the kind that is easy to learn and lets us just focus on the puzzles, rather than the play mechanics. The levels progressively build upon each other and become more challenging. Overall, the play experience of Kotoro is quite delightful and, though the game is a "casual game," we find it hard to put down.


A fascinating and challenging app.


Certainly not the first color mixing game by any means, but that won't stop it from standing out as a quality puzzle game. The controls are fluid and enjoyable and the puzzles are pleasant to think through.


Really good sound track. Easy to grasp mechanics with a quick and effortless tutorial. Puzzles ramp up nicely. Good game.


We recommend it. Atmospheric and interesting.


We hate the stupid fast-paced games that are more about luck than thought. We have a special interest in color, being an artist. This game is great not only for honing your basic subtractive RYB color scale skills, but also challenging your brain to solve problems. We're on the "replicate" chapter and think that this game was well-thought out and implemented. It would be interesting if they also added some levels using additive colors, as the RGB color-mixing would be a new challenge for us.


We're really enjoying this game. Good when you have 5 minutes or an hour. And we love the new twists as you get deeper into the challenges.


Makes u think before u make a move, but let's u make mistakes and start over.


Nice puzzle game. Fun to think in colors. The sounds and music are soothing and go with the pretty spheres.


Belo visual, jogo simples, mas com excelentes desafios e quebra-cabeas ;).


Intelligently designed, beautiful soothing interface, smart enough so you don't feel like you're wasting your time, easy enough for everybody to enjoy. 72 levels of pure fun! Wish there were more.


This game is unusual, carefully crafted, and challenging while still being relaxing to play. Great job.


This app has so few views we actually have a chance of seeing ours.


Fun, too. The peaceful music is a plus – very relaxing. Nice, uncluttered interface.


We have barely finished the intro, but wanted to rate the app before continuing. We look forward to completing all the levels.


Very nice app. Great game and challenging! Beautiful display.


The game is really fun and challenging. It might be our favorite app. No flashy images or over the top themes, and is still one of the most fun games we have played.


Made colors, made green from blue best game 5/5 would buy again.


This would be a much better game if the sound could be turned off.


Only reason we did not give it 5 stars,Just 3 wishes: 1. Ability to turn off sound. 2. Easy way to know what chapter you are in. 3. Add different animation when the color is found, like oversizing the ball and taking you automatically to next game.


This amazing colour mixing game requires much thinking and is very fun. Get it.


Nice game. Challenging, yet relaxing. Not too much of your brain needed.


This is nice puzzle – not too challenging but keeps you on your toes especially with the timing section. It's not for everyone but if you like color puzzles like train yard – this is another one to pick up.


The object of the game is to change your clear orb to a specific color by absorbing other orbs around you. Some colors can be mixed together (primary), some can only be absorbed by matching the color. It is challenging as you go along, but the game had good instructions. We are not crazy about this game so far. Maybe it gets better at higher levels, but it's just not a fun game for us. The graphics are good but basic; other reviewers say it's "minimalist". However you describe it, it's not what we expected. The game play is not interesting to us. We don't remember what it costs, but if it's more than a dollar, it's not worth it. That's just our opinion. We read the other reviews. Most are really positive, so it's obviously not a bad game. Just not interesting to everyone. (we never understood the appeal of Zenbound either, and it is one of most loved and highly-rated iOS games ever.).


5-10 percent of the population cannot play because of poor color choices and no colorblind option. Add textures or symbols would also help.


Have been playing it for a couple of weeks now. Love graphics, sounds and colors. So creative and addictive. Highly recommended.


Creative and relaxing game. Nice sound and graphics.


Wonderful, challenging, and relaxing; This game offers a unique combination of qualities, ranking it among our favorites. More levels, please.


Takes creative thinking and looks very pretty. It progressively gets harder (as it should) but still is only so complex. Great to kill time or challenge friends with.


After playing smash hit which is thoroughly addictive but keeps you one second away from a heart attack at all times, this game is puzzling thoughtful yet relaxing. Soothing colors and music make for a pleasurable experience which you can play for a minute or an hour.


Had a heck of a time figuring the game out first but once we got the hang of it, we fell in love :D.


Beat it in two hours. Loved every minute of it. We just can't wait for more.


Gorgeous, yet challenging game. We like the controls and how the orbs "float". Good soundtrack too.


A fun, non-stressful game. Beautiful, but simple visuals – great soundtrack. Great way to just empty the mind and concentrate on a puzzle.


Very fun and very challenging we love it! But we've been stuck on a level and it's very difficult : /.


It's a really cool game but it has some glitches and crashes a lot but overall good game.


The aesthetics are well put together and the music is quite good. To those stuck on levels, they are all solvable. The game reminds us of Osmos meets Trainyard, but has neither the advanced physics nor deep puzzles. Making more complex puzzles that rely on more than short term memory or brute force search (we found ourselves relying on a very standard algorithm after a few levels) would be great. Biggest critique is that the spatial nature of the game is underutilized since the puzzles are purely combinatorial (ie which order to collect things). Seeing space made more relevant in future level expansions would be a big bonus. Congrats on a cohesive and elegant game, we really like the artwork.


Love the music, worth the .99 just for that alone, the puzzles are an added bonus, visually calming, and challenging at the same time, strange combo but it works.


See title. Three stars because it's too easy.
User feedback from Apple App Store


App Details

  • Version: 4.0
  • Size: 108.09 MB
  • iOS: 13.0 or later
  • Languages: EN, FR, JA, ZH, ES
  • Content Advisory:
  • Developer: Semidome Inc.

Last updated: 30th May 2025 | Genre: Entertainment, Strategy | Developer: Semidome Inc.

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