A Kyoto software company shipped a mobile game in October 2014 with an internal download target of about 50,000 a year, no marketing budget, and no English translation. Nine years later it had passed 19 million downloads worldwide. The Neko Atsume idle game loop asks almost nothing of you, and that was the point: you put food and toys in a small yard, you close the app, and the cats arrive while you are somewhere else. The reward for playing is generated by not playing. That inversion turned a side project into a genre landmark and pulled a whole category of Japanese mobile design into international view.
Table of Contents
- How the Neko Atsume Idle Game Loop Actually Works
- Where the Idle Game Genre Came From Before Neko Atsume
- Why the Neko Atsume Idle Game Rewards Absence
- What Research Says About Idle Games and Waiting
- The Boom: Clones, a Dog Version, and a Cat Inside Android
- From Phone Screen to Cinema, VR, and a Sequel
- Why the Cat, and Why Japan
- Frequently Asked Questions
How the Neko Atsume Idle Game Loop Actually Works
Hit-Point, a small software company based in Kyoto, released Neko Atsume on iOS and Android on 20 October 2014. The programmer behind it was Yutaka Takasaki, who built it in the gaps between other projects. The illustrations came from designer Ippei Morita, and the music from Ryo Shintani. The English release, titled Neko Atsume: Kitty Collector, followed on 30 October 2015, a full year after the Japanese original.
The mechanics fit in a sentence. You have a yard. You buy food and toys with two currencies, silver and gold niboshi, the dried sardines used for stock in Japanese cooking. You place your items, you leave. When you come back, some cats have visited, eaten, played, and left you more niboshi. You photograph them, you log them in a book, you buy better toys, you leave again.
There is no fail state. Nothing expires in a way that punishes you. As of version 1.15.0 the collection held 86 cats, 26 of them rare visitors that only appear if you have the right item or the right food, and the yard could be remodelled into styles including Zen, Rustic, Modern, Western, Sugary and Cafe. Takasaki described the world he was making as closer to a manga than to a game, which explains why the cats are neither strays nor pets. They are characters who happen to drop by.
The 50,000 Download Target
In an interview with the Japanese magazine Weekly ASCII Plus, Takasaki said expectations had been low, with an initial target of roughly 50,000 downloads a year. The game passed 2 million in its first months and about 4 million across iOS and Android by May 2015. By 4 December 2015 it had reached 10 million. When Hit-Point announced a sequel in February 2024, the figure quoted was more than 19 million downloads worldwide.
None of that came from advertising. It came from screenshots. Players posted the cats that turned up in their yards, other people asked what the app was, and the loop repeated. The official account accumulated more than 100,000 followers while barely posting. This is the same organic spread that built the early feline internet, a mechanism we traced in our history of cat blogs and the feline web between 1995 and 2010, except compressed into a few months and running on mobile screenshots instead of blog rolls.
Where the Idle Game Genre Came From Before Neko Atsume
Idle games did not begin with cats. They began with a joke about role playing games. Progress Quest, released in 2002 by Eric Fredriksen, is generally treated as the first of the type. It parodied the automated combat and stat grinding of MMORPGs by removing the player entirely. You created a character, and then you watched. The character levelled up, killed things, collected loot, and you contributed nothing beyond the initial setup.
In 2010 the game designer and academic Ian Bogost built Cow Clicker, a satire of the Facebook social games then dominating the platform. You clicked a cow. Then you waited six hours before you could click it again. Bogost described it as social games distilled to their essence, a playable theory rather than entertainment. It was the first game of this shape to get sustained mainstream press, largely because people played it sincerely, which was funnier and bleaker than the satire itself.
The Joke That Refused to Stay a Joke
The genre stopped being a punchline in 2013 with Cookie Clicker by the French developer Julien Thiennot, who works under the name Orteil. You click a cookie, you buy a grandmother who bakes cookies for you, and the numbers escalate until they need scientific notation. Orteil has called his own output non-games. In early 2014 he released Idle Game Maker, a tool that let anyone build the same structure.
Two design ideas arrived quickly after that and still define the category. AdVenture Capitalist pushed offline earnings, meaning the simulation kept accumulating while the game was shut down. Clicker Heroes, by Playsaurus, popularised prestige, the mechanic where you voluntarily reset your progress in exchange for a permanent multiplier. Others, such as Candy Box! and Universal Paperclips, did something rarer for the genre and gave the player an actual ending.
Why the Neko Atsume Idle Game Rewards Absence
Here is where the Japanese branch of the genre split off. Western idle games treat absence as an accounting problem. You were gone eight hours, the simulation ran the maths, here is your pile of currency. The number is the reward.
Neko Atsume gives you a scene instead. You open the app and there is a cat in a cardboard box, a cat wedged into a bowl too small for it, a cat asleep on a cushion you bought three days ago on a hunch. The variable is not how much you earned. It is who came. The Japanese term for this family of games, hōchi games, translates roughly as neglect or leave-alone games, and that framing is more honest about what is happening than the English word idle. You are not idling. You are leaving something set up and hoping.
This is also, and not by accident, an accurate model of how cats work. You cannot summon one. You can only make a place worth visiting and then get out of the way. Games that put you inside the animal have to solve a much harder problem, the one we picked apart in our look at cat simulator games and the design trouble of playing an animal with no hands. Neko Atsume sidesteps it completely by refusing to let you be the cat, or even to touch one properly. You are the landlord. The cats are the tenants, and they do not sign anything.
What Research Says About Idle Games and Waiting
Academics got interested fast. The reference paper is “Playing to Wait: A Taxonomy of Idle Games” by Sultan A. Alharthi, Olaa Alsaedi, Phillip Toups Dugas, Theresa Jean Tanenbaum and Jessica Hammer, presented at the CHI conference on human factors in computing systems in 2018. The team analysed 66 idle games with a grounded theory approach, plus 10 non-idle games used as a control, and looked at mechanics, rewards, interactivity, progress rate and interface.
Their central observation is that idle games move the player from playing to planning. The interesting decisions happen before you put the phone down, not while you hold it. They also noted the genre’s unusual economics of attention: it consumes computer cycles and clock time rather than your hands and eyes, which makes it one of the few game types that competes with nothing else in your day.
The genre has not stayed innocent. Later academic work, including an article in the Polish journal Replay titled “Idle Games: A Cozy Genre Turned Exploitative”, tracks how waiting mechanics were absorbed into aggressive monetisation, where the wait exists so you can pay to skip it. Neko Atsume sits outside that trend. Its paid currency, gold niboshi, was optional and Hit-Point showed no interest in squeezing harder.
The Boom: Clones, a Dog Version, and a Cat Inside Android
Success at that scale on mobile guarantees imitation. The Japanese developer Chronus produced Boku to Wanko, the same game with dogs, and Boku to Nyanko, which was Boku to Wanko with the cats put back. Hit-Point had no realistic way to stop a mechanic as simple as leave food, close app, come back.
The strangest tribute came from Google. In 2016, Android 7.0 Nougat shipped with a hidden easter egg: tap the version number repeatedly and you get a cat collecting game in the notification shade, where you put out food, wait, and name whichever cats show up. An operating system used by more than a billion people hid a Neko Atsume homage in its settings menu, which is a level of cultural penetration most mobile games never reach.
The industry noticed too. Neko Atsume took a CEDEC Award for best game design on 20 August 2015, and GameSpot placed it among its top five mobile games of 2015. In February 2016 the pet supply company Petio released physical versions of the in-game toys for real cats, closing the loop: a game about virtual cats producing objects for actual ones.
From Phone Screen to Cinema, VR, and a Sequel
On 8 April 2017 Japan got a live action film, Neko Atsume no Ie, which translates as The House of Cat Collection, directed by Masatoshi Kurakata and distributed by AMG Entertainment. The plot is about a novelist with writer’s block who starts caring for the cats that appear around his house. Adapting a game with no story into a feature film sounds impossible until you notice the game was never about the cats arriving. It was about the person waiting. The film screened at the Japan Cuts festival in New York in July 2017.
A PlayStation VR version arrived in Japan on 31 May 2018 and internationally in August 2021, which is an odd product: a game built on absence, ported to a device you strap to your face. Hit-Point then announced Neko Atsume 2 on 22 February 2024 for a summer window, slipped to autumn, and released it on 20 October 2024, exactly ten years after the original.
Reception was mixed, and the complaints are instructive. Reviewers pointed out that the art, music and cats were largely unchanged, making it read as an update with a number attached. The additions were social: Going Out, which lets you visit other players’ yards, and Cat’s Club Support, which brings in helper cats. The most contested change was durability, where items degrade and need fish to repair. Introducing decay into a game whose entire appeal was that nothing bad happens while you are away is a design decision worth arguing about.
Why the Cat, and Why Japan
A cat is the correct animal for a game about waiting, and Japan had several centuries of practice making that argument. The beckoning figurine in shop windows, whose real and much-disputed origins we untangled in our piece on the history of the maneki-neko, is already a statue of an invitation rather than a possession. The literary tradition runs the same way, from Soseki’s narrator onward, as we covered in the cat in Japanese literature from Soseki to Murakami: the cat watches, comments, and leaves.
The country also has physical places built on the same principle. The fishing settlements documented in our guide to Japan’s cat islands are, functionally, offline versions of the game: humans set out food, cats decide. The commercial version, the cat cafe, went in the opposite direction and turned the waiting into a paid hourly experience, a story we followed in how a Taiwanese idea became a global institution.
Cats were also already the default mascot of Japanese mobile gaming. PONOS launched Nyanko Daisensou, known in English as The Battle Cats, on the Japanese iOS store in November 2012. It passed 17 million downloads by February 2015 and 55 million by November 2020. It is a tower defence game rather than an idle one, and the cats are deliberately ugly, but the point holds: putting a cat on a Japanese mobile game was never a risk. For the longer arc, our history of cats in video games from Cait Sith to Stray covers the ground from 1983 forward.
Frequently Asked Questions
Was Neko Atsume the first idle game?
No. Progress Quest from 2002 is usually credited as the first, and Cow Clicker in 2010 and Cookie Clicker in 2013 established the genre in the West. Neko Atsume, released in 2014, matters for a different reason: it replaced escalating numbers with a scene you want to look at.
How many downloads did Neko Atsume get?
Roughly 4 million by May 2015 and 10 million by 4 December 2015. When Hit-Point announced the sequel in February 2024, it cited more than 19 million downloads worldwide. The internal target before launch had been about 50,000 a year.
Is there a Neko Atsume movie?
Yes. Neko Atsume no Ie, a live action film directed by Masatoshi Kurakata about a blocked novelist and the cats around his house, opened in Japan on 8 April 2017 and screened at the Japan Cuts festival in New York that July.
What is the difference between Neko Atsume and Neko Atsume 2?
Neko Atsume 2, released on 20 October 2024, keeps the art, music and most of the cats, and adds Going Out for visiting other players’ yards, Cat’s Club Support helper cats, and item durability that requires fish to repair. The durability system is the main source of complaints, since it introduces loss into a game whose appeal was that nothing goes wrong while you are gone.
Why do the cats only appear when the app is closed?
That is the design. Visits are resolved while the game is not running, so the only way to progress is to stop playing. It turns closing the app into the core action, the opposite of how most mobile games are built.
The Cat Comes Back
The most influential idea in Neko Atsume was not the cats. It was making the player’s absence the input. Everything after it, the clones, the easter egg buried in Android, the film, the headset version, the sequel ten years to the day later, grew out of one small Kyoto studio deciding that a game could be a place you prepare rather than a thing you do. The cats are why anyone stayed. The design is why anyone still talks about it. Put out the food, close the app, and something will show up or it will not. Both outcomes are the game.
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