NAMAKORIUM Brings Cooperative Sea Cucumber Cleanup to Steam Early Access

Polyscape has announced NAMAKORIUM, a charming cooperative multiplayer RTS set in a post-apocalyptic world where ocean pollution has eliminated most marine species. Players command cute sea cucumbers to restore the seas. The game launches on Steam Early Access on January 30, 2026.

Cooperative Ocean Cleanup

NAMAKORIUM puts players in charge of managing sea cucumber colonies to decontaminate polluted waters. Supporting 1-4 players with both Friend Match and Random Match online modes, the game combines resource gathering, base construction, and strategic planning within tight time constraints as food supplies gradually deplete. The core loop emphasizes teamwork and coordination as players race against the clock to clean up contaminated zones.

The early access release includes 8 difficulty-varied stages and supports random matchmaking for quick multiplayer sessions. As players progress through increasingly challenging environments, they can unlock over 40 collectible viewing creatures through successful decontamination efforts. These creatures include both real and fantasy marine fauna, serving as rewards for thorough cleanup work.

Specialized Sea Cucumber Types

Players can command different types of sea cucumbers, each bringing unique abilities to the cleanup effort. Shell cucumbers offer defensive capabilities, while Iron cucumbers provide durability for tougher jobs. Flame and Ice sea cucumbers add elemental strategies for tackling various environmental challenges and enemy types.

As pollution levels decrease, the ocean gradually returns to its original vibrant colors, providing satisfying visual feedback on cleanup progress. Watching the waters transform from murky and contaminated to clear and healthy creates a rewarding sense of accomplishment.

Boss Battles

Not all threats come from pollution alone. Boss encounters against powerful enemies called Okegare-sama require players to coordinate their forces and combine their sea cucumber colonies into a devastating combined sea cucumber cannon attack. These climactic battles test teamwork and timing as players must synchronize their efforts to defeat these formidable foes.

Pricing and Crowdfunding

NAMAKORIUM will be available at a special early access price of ¥1,200, with the standard price set at ¥1,500 after the promotional period ends. Polyscape has also launched a crowdfunding campaign on CAMPFIRE to support IP expansion and North American media outreach, with reward tiers ranging from ¥1,000 to ¥40,000 offering merchandise including figurines, acrylic stands, plushies, and game keys.

Game Information