
Screenshots

Watch trailer on Steam ↗NAMAKORIUM (ナマコリウム)
Polyscape Inc. · Published by Polyscape Inc.
Very Positive — 94% positive (199 reviews) · 24 achievements
Last updated 28 Sept 2026
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!
£6.99
£9.99Lowest price we've ever recorded
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Price history
Indie, Simulation, Strategy, Casual · 2026 · More £5 - £15 games
Command sea cucumbers to save Earth in NAMAKORIUM, a chaotic cooperative multiplayer game where you and three friends work together to restore polluted oceans.
About this game
NAMAKORIUM is a chaotic, cooperative multiplayer RTS for up to four players.
Command the "sea cleaners"—Namakos (sea cucumbers) left behind by humanity—and clean up the polluted oceans!
Plus, Solo Mode lets you choose your style: take it slow and chill, or push for peak efficiency!
Can you reclaim the beautiful sea?
It’s all up to your planning skills, your friends, and your trusty sea cucumbers.
Get ready for a frantic, action-packed ocean cleanup operation!
Organize Your Namako Operation
Command unique Namakos, gather resources, construct buildings, and clear paths—the tasks are many and time is short.
Purify all the pollution before the food runs out!
Will your strategy hold up under pressure and succeed with the team?
Unique Namakos with Special Traits
Shell Namako gathers limestone. Iron Namako is great at mining. Flame Namako and Ice Namako can survive extreme temperatures.
Use their distinct abilities to assign roles and conquer each stage together!
Restore the Ocean’s Beauty
As you decontaminate, corals bloom, sunlight shines through, and the ocean regains vibrant color.
Over 50 types of "Scenic Creatures" will begin to swim in—try to collect them all as you heal the seas!
Beware the “Blight Namako”!
During cleanup, corrupted Namako known as "Blight Namako" may suddenly appear.
They rot your food and drag the ocean back into darkness.
Team up and repel them with the mighty Namako Fusion Cannon!
Master efficiency in Solo Mode!
Play your way—not just in multiplayer, but solo too!
All stages have been fine-tuned for solo play.
Perfect your strategy and aim for the best time!
Of course, taking it slow and steady is perfectly fine too!
Features
Planning x RTS Gameplay: Strategize based on map structure and control multiple cucumbers simultaneously
Chaotic Cooperative Play: Plans may succeed... or hilariously fail—every match brings its own story
Online co-op matches where you can easily team up and play with friends or strangers.
Over 50 Scenic Creatures: Discover real and fantasy species as you play
16 Unique Stages
Stage Titles Based on Clear Time
Adorable Sea Cucumbers & a Hidden Post-Apocalyptic Worldview
Play Solo Mode: Relaxed or Fully Optimized.
Guidelines for Streaming and Video Posting
Streaming and Video Posting: OK (Very welcome!)
Monetization: OK
Prohibited Streaming Areas: None
We would appreciate it if you could include a link to your Steam store page in the description.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10 or later (64-Bit)
- Processor: i5-3570K 3.4 GHz 4 Core
- Memory: 16 GB RAM
- Graphics: GeForce GTX 1050 (2GB)
- DirectX: Version 12
- Storage: 4 GB available space
- Additional Notes: Internet connection required for multiplayer. SSD required.
Recommended
- Requires a 64-bit processor and operating system
- OS: Windows 10 or later (64-Bit)
- Processor: i9-9900K 3.6 GHz 8 Core
- Memory: 32 GB RAM
- Graphics: GeForce RTX 2070
- DirectX: Version 12
- Storage: 4 GB available space
- Additional Notes: Internet connection required for multiplayer. SSD required.
Supported Languages
Latest news
Patch NotesOfficial
Update ver.1.0.4
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 on your ranking in the 2, 3, and 4-player categories. If you participated in multiple categories, you have received a badge for each.Badges will be displayed on the Join Screen and under your username during stages.Badge Types1st Place (Exclusive)2nd Place (Exclusive)3rd Place (Exclusive)Gold (Ranked 4th–10th)Silver (Ranked 11th–30th)Bronze (All participants)Additional UpdatesThe usernames of the 1st to 3rd place winners of "The 3rd Namako Leader Contest" have been added to the Credits.Important: Please ensure your game is updated to the latest version. Players on different versions of the game will not be able to join the same room.We hope you continue to enjoy NAMAKORIUM!Read full article on Community Announcements (kafka)Community & EventsOfficial
Event: The 3rd Namako Leader Contest!
We 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 Period>Thursday, June 25, 2026, 11:00 PM – Sunday, June 28, 2026, 5:59 PM (PDT)*Event times are subject to change.<Contest Details>Compete for the best clear time on special stages available only during the contest. Clear times will be ranked by party size (2, 3, or 4 players).Rewards: Based on your ranking, you will receive special "Badges" that can be displayed next to your player name.Special Honor: The Top 3 players in each category will have their names featured in the game’s Official Credits!<How to Participate>Anyone can join! Please note: The 3rd contest is exclusive to Multiplayer Mode.<Notes>Badges and Credit Listings: These will be implemented in a future update.Player Names in Credits: The player name used for the credits will be the one set at the exact time the contest ends.Name Eligibility: Please note that certain player names may be excluded from the credits at our discretion.Emoji Support: Emojis in player names may not display correctly in the credits.We look forward to everyone's participation!Read full article on Community Announcements (kafka)Patch NotesOfficial
Update ver.1.0.3
Thank 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 clear times affected by glitches or errors from being posted to the leaderboards.Minor Adjustments: Fixed other minor bugs and issues.Important Notice Please note that you will not be able to join multiplayer rooms if your game version differs from other players. Please make sure to update your game to the latest version before playing.Thank you for your cooperation, and we hope you continue to enjoy NAMAKORIUM!Read full article on Community Announcements (kafka)Patch NotesOfficial
Update ver.1.0.1
Thank 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 game, as players with different game versions will not be able to join the same room.Thank you for your continued support of "NAMAKORIUM".Read full article on Community Announcements (kafka)AnnouncementsOfficial
Full Release Out Now!
Command 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 to everyone who played the Early Access version. To those starting your journey with the full release, we truly hope you enjoy the game!To celebrate the full release, a limited-time 40% OFF sale is now live. It’s a game best enjoyed with others, so please recommend it to your friends!5 New Stages AddedWe have added 5 new stages, which includes making 2 of our past limited-time event stages permanently available.One of these stages features a fierce boss battle waiting for you.If a Namako even enters the boss's line of sight, it will be instantly devoured...The key to defeating the boss is "Decontamination"—the most fundamental action in this game! Good luck, everyone!3 New Cosmetic DLCsWe have simultaneously released 3 sets of cosmetic DLCs for your Namakos! Be sure to dress them up and give them a stylish new look.We have also prepared a great value bundle that includes all 3 DLCs at a 20% discount. If you want to complete the full cosmetic collection, don't miss out!3 New Supported LanguagesThe following languages have been added. You can change the language from the Options menu.RussianGermanBrazilian PortugueseStage Adjustments & Leaderboard UpdateWe have adjusted the terrain for certain stages. Along with these adjustments and the full release, the seasons for both the multiplayer and solo leaderboards have been refreshed.You can view records from past seasons by switching between tabs.In ClosingWe were only able to reach this full release thanks to the incredible support from all of you. Thank you so much from the bottom of our hearts.We hope you will continue to support the game and our lovely Namakos!Thank you for everything, and enjoy the game!Read full article on Community Announcements (kafka)






