Steam app 2949320 · updated 12 Sep 2026, 20:46 UTC
Ratatan is a rhythm roguelike action game that combines rhythm games and side-scrolling action, with online co-op gameplay supporting up to 4 players. An intense battle unfolds with over 100 characters fighting in a massive melee. Let's defeat the enemies together!
702 hourly samples, with the daily peak drawn over them. Weekends are shaded.
13 months, September 2025 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 419 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 283 hourly samples. Each dip is a night. Weekends are shaded.
Ratatan was released on 18 Sep, 2025.
| Language | Full audio |
|---|---|
| English | |
| French | |
| Italian | |
| German | |
| Japanese | |
| Simplified Chinese | |
| Traditional Chinese | |
| Korean | |
| Portuguese - Portugal | |
| Spanish - Latin America |
A blank audio cell means full audio was not marked in the returned language list.
50 developer announcements, Feb 2025 to Sep 2026 · times in UTC
Ratatan Development Log #7 BitSummitIn the previous article, I talked about the importance of creating the UX Video for our Kickstarter campaign.From this point on, preparations for Kickstarter began in earnest.Simply making a great game…
DemetanRatatan Development Log #6The UX VideoIn the previous article, I explained how Kickstarter became our first major milestone, marking the point where Ratatan evolved from an idea into a real project.However, at that stage, all we had was a…
DemetanRatatan Development Log #5 Kickstarter as a GoalIn the previous article, I talked about how Ratatan's direction finally became clear once both the gameplay concept and the visual concept came together.At this point, I'd like to clarify one…
DemetanRatatan Development Log #4: Finding the Visual ConceptIn the previous article, I looked back on how we moved forward with prototype development before our game concept had been fully defined.However, the game concept wasn't the only thing…
DemetanRatatan Development Log #3: The First PrototypeOur first prototype ultimately failed.At the time, we didn't fully understand why.Looking back today and rereading the original design documents, however, the reasons have become surprisingly…
DemetanIntroductionThis time, I'd like to look back at our original game proposal.At this stage, there were no gameplay screenshots, and many aspects of the game had yet to be defined.However, the proposal clearly shows what we were trying to…
DemetanRatatan Development Log #1: The Beginning of the ProjectThis time, I'd like to look back at how the Ratatan project first began.When people think about game development, they often imagine a straightforward process: come up with an idea…
DemetanIntroductionHello, I'm Kazuto Sakajiri, Producer of Ratatan.Welcome to the Ratatan Development Log.Over the past several years, Ratatan has gone through countless decisions and challenges—from launching a Kickstarter campaign, building a…
DemetanHello RataTEAMWe have a few very important developments that we’d like to go through. First off, we are sorry for the radio silence, but as with most games, getting close to the finish line means a lot of extra work, bug fixes, and overall…
tokuyama-rRatatan was featured in today’s Nintendo Indie World presentation. At the same time, we announced the official release date. Release Date: July 16, 2026 (Thursday) Physical and digital editions will launch simultaneously. Supported…
ratatan-pUpdatesAdded voice and sound effects to Dark Ratatan battles.Updated the credits (thank you for everyone’s patience!).If you couldn’t find your name, please send us an email at [email protected] FixesFixed an issue where Cobun…
Patch notesBug FixesFixed an issue where the game crashed upon launch on Steam Deck.Please note that as Steam Deck and Linux are not currently officially supported, this is a provisional fix.
Patch notes\ Regarding Progression to Episode 2We have received feedback that players are unable to proceed to Episode 2 or that the unlock conditions are unclear. We apologize for the inconvenience. To unlock Episode 2, the following two conditions…
Patch notesUpdates Highlights ● Dark Ratatan Invasion! ○ Starting in Episode 2 (added in this update), Dark Ratatan will appear during your adventure. ○ Dark Ratatan will appear during Intervals, triggering various events. Some of them might even help…
tokuyama-rHello, everyone! Thanks so much for waiting. We’d like to share the current progress on the next major update planned for December. This update has been particularly challenging to develop, and we are currently aiming to release it around…
ratatan-pUpdate Super Fever Skills now grant Super Armor. Super Fever Skills will no longer be canceled by knockback or status effects caused by enemy attacks. Improved gameplay experience by preventing the sudden drop in BGM intensity from reducing…
Patch notesBug FixesFixed an issue where save data could become corrupted and fail to load properly. This occurred when the amount of data being saved grew too large after extended gameplay sessions, so we have increased the upper limit for the amount…
Patch notesUpdatesHighlightsSuper Fever TechRatatan units can now unleash the Super Fever Tech.Unlock it from the Quest Board.When the Tension Gauge is full, input the specified Rhythm Command to consume all Tension and activate.Per-unit Super Fever…
tokuyama-rDeveloped by Ratata Arts and published by Game Source Entertainment, the Rhythm × Roguelike action game Ratatan has surpassed 100,000 cumulative sales worldwide during its Early Access period! We would like to express our heartfelt…
ratatan-pNotice Regarding Language DisplayWe have corrected the supported language display on the Steam store page from “Spanish – Spain” to “Spanish – Latin America.” This change was made to resolve a discrepancy between the language shown on the…
Patch notesUpdateThe Ratatan will now speak when first selecting them in the formation screen.Improved save data stability.Bug FixesFixed an issue where saving mid-battle with a buff active could prevent the game from resuming.Fixed an issue where…
Patch noteshttps://store.steampowered.com/app/2949320/Ratatan/ It’s been almost two weeks since Ratatan entered Early Access. We can’t express how grateful we are to everyone who has played the game and shared their thoughts with us via reviews and…
ratatan-pImportant Notice(Updated: 2025/09/26 11:00 JST)The issue in Ver.0.5.9 that caused progression to become impossible has been fixed, and the game has been re-released as Ver.0.5.10.We apologize for the inconvenience caused to all…
Patch notesBug fixesFixed an issue in multiplayer where players could join an already-deployed session and the game would become unplayable.Fixed a bug in multiplayer where non-host players could launch into the world from the lobby.Known issuesThank…
tokuyama-rPlanet Redo. On a world where humanity no longer exists floated a cluster of islands called Ratatan Land, surrounded by a vast ocean. The singing ship Fortrun and the black bird Crow embark on a journey with their friends, the Ratatan, to…
ratatan-pHighlightAll Ratatan have been unlocked.You can now freely assemble your unique companions, greatly expanding your tactical options.All weapon types have been unlocked.All weapons, including Bombs, Wands, Hammers, and Sickle, are now…
tokuyama-rCategoriesQAGameplayThe game is too difficult.We recommend playing with Welcome Mode turned on. When Welcome Mode is enabled, the early stages of your adventure will be easier to progress through, and you'll receive benefits such as reduced…
ratatan-pThe sale price of the Ratatan Early Access version and the release times for each region have been decided! {STEAM_CLAN_IMAGE}/45312450/5ca861bb8277daccb90974d7fff561be48cf9954.png Selling Price USD: $24.99 JPY: ¥2,800 EUR: €24.50 Launch…
ratatan-pHey there, RataTEAM! This is the Ratatan dev team. Today, we’d like to share our plans for major updates scheduled after the launch of Early Access. Ratatan will continue to evolve rapidly from the start and our development team is…
ratatan-pRatata Arts will be holding a special livestream to celebrate the launch of rhythm action game Ratatan into Early Access. {STEAM_CLAN_IMAGE}/45312450/2f49102b321591a8e6e0ee15de69f8579bdb3bd2.jpg Stream Summary Show Name: Ratatan Pre-Early…
ratatan-p{STEAM_CLAN_IMAGE}/45312450/91d38eb0f1f10f5d74d384f12a97b49ca59e5103.pngHello everyone, this is the Ratatan development team. The Early Access release of Ratatan is now scheduled to begin at 12:00 a.m. JST on Friday, September 19, 2025.…
ratatan-pThanks to everyone's incredible support, Ratatan has won the Vermilion Gate Award at BitSummit the 13th (2025)! This prestigious award is given to the most outstanding and noteworthy title of the year at BitSummit. To everyone who played…
ratatan-pHey there, Rata-team! Thank you so much for all of your kind support. Today, we have some important news regarding the launch of Ratatan into Early Access. About Early Access We had originally planned to release Ratatan to Early Access on…
ratatan-pAdded Frame Rate CapWhen vertical sync was turned off, the frame rate would increase excessively, causing high CPU usage. To address this, a frame rate cap has been implemented.When vertical sync is off, the frame rate will now be capped at…
Patch notesThank you all so much for playing Ratatan during Steam Next Fest. The demo has been downloaded over 200,000 times, and the number of wishlists has surpassed 300,000. We are deeply grateful for the incredible interest so many of you have…
ratatan-pRATATAN Demo v0.3.124 UpdateFeatures & ImprovementsRhythm Action Judgment LogicWe’ve adjusted the judgment logic for rhythm actions to reduce discrepancies between music and notes caused by system performance or load.However, we must…
Patch notesRATATAN Demo v0.3.105 UpdateNew Features & ImprovementsMultiplayerAdded the ability for guest players to voluntarily leave a session.UI/UXAdded multilingual support to various items in the options menu.The 'NEW' icon will now appear when…
Patch notesImprovements and Future Plans for the Ratatan DemoThank you so much for playing the Ratatan demo!We can’t begin to express how much we appreciate everyone who has played this new take on rhythm action along with its charming characters and…
tokuyama-r\ RATATAN Demo v0.3.90 → v0.3.87We have reverted the demo to v0.3.87 after discovering that the Hotfix build v0.3.90 released earlier today contained a bug preventing the tutorial from starting.A corrected Hotfix (v0.3.90 revised) is in…
CrowHello, from the development team! We’re thrilled to share that Ratatan has surpassed 200,000 wishlists on Steam! From the very beginning with our Kickstarter campaign, through the demo and trailers, your support has been utterly incredible.…
ratatan-pRATATAN Demo v0.3.87 hotfixFixed rendering process for effects.This fix optimizes situations where the frame rate tends to drop.Fixed an issue where the following sound effects might not play:Jingle at the start of boss battles • Jingle…
tokuyama-rHello! This is Sakajiri, the producer of Ratatan. Today, we’ll be unveiling our latest Ratatan trailer during Day of the Devs! Not only that, but we’re also happy to announce that the Early Access version of the game is scheduled to launch…
ratatan-pRATATAN Demo v0.3.78 hotfix•Fixed an issue where overlapping text was displayed during the opening scene of the tutorial when using a language setting other than Japanese or English.•Fixed an issue where the camera settings would be in an…
tokuyama-rAn issue has been identified in which the in-game music and rhythm gauge may become unsynchronized under certain conditions, such as low frame rates or specific hardware environments. The development team is aware of this problem and is…
ratatan-pHello from the Ratatan development team! The Ratatan Demo is now live on Steam! https://store.steampowered.com/app/3449820/Ratatan_Demo/ In this demo, you can experience the Intro Scene and Tutorial, followed by two early-game worlds…
ratatan-pIntroduction To those who are considering sharing footage of Ratatan, thank you for your interest in this work. The development and operations team welcomes you to share your experiences with the game through live video, streaming, and…
ratatan-pAfternoon RataTEAM! We've had lots of requests so now it gives me great pleasure to announce the opening of the Ratatan public demo landing page on Steam! Public Demo release time is scheduled for June 5th at 9PM JST! The demo contains…
ratatan-pHello RataTEAM! First off thanks for the great feedback on the backer Beta. It's been invaluable for providing insight in areas we can focus on for improvement. Also, for those of you who didn't get a chance to play the Beta, we are cooking…
ratatan-pHello RataTEAM! It's update time and of course we have more information about the ongoing backer beta. It's a big update so grab a seat and have a read! MIX Spring Showcase Ratatan will be taking part in The MIX Spring Showcase on March…
ratatan-pHello! Producer Sakajiri, here. Thank you all for your patience! This month we'd like to share some details about the long-awaited closed beta test. Wishlists Now Exceed 100,000! Thanks to your tremendous support, the number of wishlists on…
ratatan-pEverything Steam lists as add-on content for this game, newest first. Prices are left out on purpose: the store answers this page in one currency and it is not the reader's.
| Name | Platforms | Released |
|---|---|---|
| Ratatan Original Soundtrack Demo | WindowsLinux | 26 Dec 2024 |
What Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | game.exe | windows 64 |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
WinAppDataLocalLow | RatataArts/Ratatan/{Steam3AccountID} | *.rttn |
WinAppDataLocalLow | RatataArts/RatatanDemo/{Steam3AccountID} | *.rttn |
WinAppDataLocalLow | RatataArts/RatatanDev/{Steam3AccountID} | *.rttn |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG