Steam app 3866920 · updated 12 Sep 2026, 22:51 UTC
Namako (Sea cucumbers) will save the Earth—NAMAKORIUM is a chaotic, cooperative multiplayer RTS game for up to four players. Command the “cleaners of the sea” —Namako left behind by humanity and work together to clean up the polluted oceans!
118 hourly samples, with the daily peak drawn over them. Weekends are shaded.
8 months, February 2026 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.
25 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
28 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
12 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
NAMAKORIUM (ナマコリウム) was released on 18 May, 2026.
| Language | Full audio |
|---|---|
| English | |
| Japanese | |
| Simplified Chinese | |
| Traditional Chinese | |
| Korean | |
| German | |
| Portuguese - Brazil | |
| Russian |
A blank audio cell means full audio was not marked in the returned language list.
24 achievements in total.
34 developer announcements, Oct 2025 to Jun 2026 · times in UTC
Thank you for your continued support of NAMAKORIUM.We are excited to announce that Version 1.4 has been released today.About BadgesBadges have been awarded to all participants of "The 3rd Namako Leader Contest."Badges were distributed based…
Patch notesWe are excited to announce our first limited-time event: "The 3rd Namako Leader Contest"! This is a speedrun competition where players compete for the fastest clear times on exclusive event stages that are open for a limited time.＜Event…
kafkaThank you very much for your continued support of NAMAKORIUM. We are pleased to announce that the game has been updated to ver1.0.3 today.Event Preparation: Made preparations for an upcoming limited-time event.Rankings Bug Fix: Prevented…
Patch notesThank you very much for your continuous support for "NAMAKORIUM". Today, we have released the ver1.0.1 update.Fixed an issue where badges awarded during past limited-time events were not displaying.Fixed other minor bugs.Please update your…
Patch notesCommand Namakos to clean up the ocean in this cooperative multiplayer RTS game (you can play solo too!). "NAMAKORIUM" has officially transitioned from Early Access to its Full Release today!We would like to express our heartfelt gratitude…
kafkaThank you very much for your continued support of "NAMAKORIUM." Today, the game has been updated to ver1.0.0.Added 5 new stagesAdjusted the terrain for some existing stagesAdded cosmetic features and new DLCsRefreshed the leaderboard…
Patch notesCurrently in Early Access, we are excited to announce that the official version of the game will be released on Monsday, May 18th!To celebrate the launch, we will be holding a 40% OFF sale. As this is a multiplayer game, we’d love for you…
kafkaThank you for your continued support of NAMAKORIUM.We have released the ver 0.4.1 update today.Update Details:Fixed a bug where names and descriptions for gimmicks in event stages were not displayed correctly when clicked.Fixed an issue…
Patch notesWe are excited to announce our first limited-time event: "The 2nd Namako Leader Contest"! This is a speedrun competition where players compete for the fastest clear times on exclusive event stages that are open for a limited time.＜Event…
kafkaThank you very much for your continued support of NAMAKORIUM. The version 0.4.0 update has been released today.\ Added a feature to send preset messages in the join screen.\ Added a feature to swap your base position with other players in…
Patch notesThank you very much for your continued support of "NAMAKORIUM." Today, we have released the update for ver0.3.2.Fixed an issue where the window for driving the "Bad Namako Car" would close automatically when decontamination was completed in…
Patch notesNAMAKORIUM is currently 30% OFF as part of the Steam Spring Sale through March 26! We’ve also just released an update today—you can now enjoy 11 different stages in both solo and multiplayer modes.Are you:Looking for a casual game to play…
3y_polyscapeThank you for your continued support of NAMAKORIUM. We have released an emergency update to ver. 0.3.1 today.Fixed a bug in ver. 0.3.0 where the Blight Namako could not be defeated.Please update your game to the latest version, as players…
Patch notesThank you for your continued support of NAMAKORIUM. We are excited to announce that the ver0.3.0 update is now live.Update DetailsAdded 3 new stages:"Bad Namako Driving School""Fast & Furious Bad Namako""Tamatebako Repository"The new stages…
3y_polyscapeThank you for your continued support of NAMAKORIUM.We are excited to announce that Version 0.2.3 has been released today.About BadgesBadges have been awarded to all participants of "The 1st Namako Leader Contest."Badges were distributed…
Patch notesThank you very much for your continued support of NAMAKORIUM. We have released the ver0.2.2.1 update today.Fixed an issue where the same event-exclusive stage could not be selected after choosing "Select Stage."Note: Please update your game…
Patch notesWe are excited to announce our first limited-time event: "The 1st Namako Leader Contest"! This is a speedrun competition where players compete for the fastest clear times on exclusive event stages that are open for a limited time.＜Event…
3y_polyscapeThank you very much for your continued support of NAMAKORIUM. We have released the ver0.2.2 update today.Event Preparations: Carried out preparations for upcoming events.Bug Report Fix: Fixed an issue where Japanese text could not be…
Patch notesThank you for your continued support of NAMAKORIUM. We have released an update to ver. 0.2.1.1 today.\ We have fixed an issue where the movement speed of the Namako varied significantly depending on the player's PC environment. Since this…
Patch notesThank you for your continued support of NAMAKORIUM.We have released the ver0.2.1 update today.Added Solo Mode (Thank you for your patience!)Added a "Retry" function during stage challengesCan be selected from the Options menu.In…
3y_polyscapeThank you for your continued support of Namakorium!【Solo Mode is here!】By popular demand, we have officially implemented Solo Mode, allowing you to play on your own!In this mode, you can enjoy all the stages from Multiplayer Mode without…
3y_polyscapeThank you for your continued support of Namakorium.Solo Mode will be implemented on Thursday, February 19th at 7:00 AM PST.We hope you’re looking forward to it!
kafka\By popular demand, we are excited to announce that Solo Mode is coming next Thursday, Feb 19!We are currently balancing all existing stages specifically for solo play. We hope you enjoy this new way to experience the game!
kafkaUpdate ver0.1.6.4 is now live!Lobby Adjustments: In the pre-stage joining screen, the game will now only start after all participants (not just the host) have clicked "Ready."Retry Flow: When selecting "Retry" from the Decontamination…
Patch notesWe updated to version 0.1.6.3 today.In the "How to Play" section, the instructions for the bubble fountain have been split into two parts: unlocking and building.Fixed an issue where the screen would sometimes go black at the start of a…
Patch notesWe have released the ver. 0.1.6.2 update today.Warehouse Transportation Logic: Improved the behavior of transporting materials to warehouses.The system now determines the "closest warehouse" based on the actual travel distance instead of a…
Patch notesThank you very much for playing NAMAKORIUM. We have released a new game update today.Please ensure your game is updated to the latest version. Players with different versions will not be able to join the same room.Fixed a bug where the…
Patch notesThank you for your support of NAMAKORIUM.We are releasing the roadmap for February and beyond! We plan to add solo mode by the end of February.Namakorium was originally designed with multiplayer in mind, butWe have decided to implement solo…
kafkaThe early access version of "NAMAKORIUM" was released today! We’re pleased to announce a limited-time two-week launch discount, offering 20% off the regular price of $12.99. Don’t miss this opportunity!We’ve also released a brand-new launch…
kafkaThe Early Access version of "NAMAKORIUM" will be released on Thursday, January 29th!Join the cute sea cucumbers in cooperative multiplayer for up to four players to clean up the ocean!Please add the game to your wishlist and look forward to…
3y_polyscapeWith the conclusion of Steam Next Fest, we have ended the demo version release.Thank you very much for all the plays and wishlist additions.Based on the feedback we received, we will proceed with improvements for the Early Access…
3y_polyscapeThe "NAMAKORIUM" trial version has been updated.In particular, we've made major improvements to sea cucumber movement.We've addressed an issue where sea cucumbers would not move properly.We've changed the way stationary sea cucumbers block…
Patch notes『NAMAKORIUM』 Demo Version Update.If the host and participant have different app versions, they will no longer be able to join the host's session.You can now view the “How to Play” guide from the title screen.Fixed an issue where the entire…
Patch notesThe demo version of 『NAMAKORIUM』 is now available!Experience this cooperative multiplayer RTS where you command adorable sea cucumbers!We look forward to your reviews of the demo.Please refer to the following for important notes when…
3y_polyscapeEverything 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 |
|---|---|---|
| NAMAKORIUM Supporter Pack | Windows | 18 May 2026 |
| NAMAKORIUM Dress-up Set Vol.2 | Windows | 18 May 2026 |
| NAMAKORIUM Dress-up Set Vol.1 | Windows | 18 May 2026 |
What Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | NAMAKORIUM.exe | any |
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 |
|---|---|---|
gameinstall | NAMAKORIUM_Data/StreamingAssets/ | SAVEDATA.BIN |
WinAppDataLocalLow | Polyscape/NAMAKORIUM/ | SAVEDATA.BIN |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG