The Game Census
NAMAKORIUM (ナマコリウム) cover art

NAMAKORIUM (ナマコリウム)

Polyscape Inc. · 2026-05-18

Steam

CasualIndieSimulationStrategy

Modes: Single player, Multiplayer, Co-operative

Releases: Jan 29, 2026 (PC (Microsoft Windows))

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!

NAMAKORIUM (ナマコリウム) is a Casual, Indie, Simulation, and Strategy game released in 2026, priced at $8.39, with a Very Positive review sentiment (94% of 198 reviews).

94%
positive of 203 reviews
Very Positive
steam's rating (official)
Playable
Steam Deck (Valve)
SteamOS: Playable
$8.39
steam price (US)

Health check

Quietly active
  • · 30 reviews in the last 8 weeks (~4/week).
  • · Review velocity up 43% vs the prior 8 weeks.
  • · Top 21% of 29,944 Casual games in the census by review count.

Health tier since 2026-09-01

Estimated sales: 4.1k–9.1k copies

Review-multiple estimate from 203 total reviews — how this is computed.

Review momentum

PositiveNegative
707020262026Week of 2026-01-30: 70 positiveWeek of 2026-01-30: 4 negativeWeek of 2026-02-06: 9 positiveWeek of 2026-02-13: 4 positiveWeek of 2026-02-13: 1 negativeWeek of 2026-02-20: 6 positiveWeek of 2026-02-20: 1 negativeWeek of 2026-02-27: 3 positiveWeek of 2026-03-06: 5 positiveWeek of 2026-03-13: 1 positiveWeek of 2026-03-27: 5 positiveWeek of 2026-04-03: 1 positiveWeek of 2026-04-24: 1 positiveWeek of 2026-05-01: 1 positiveWeek of 2026-05-15: 6 positiveWeek of 2026-05-15: 1 negativeWeek of 2026-05-22: 15 positiveWeek of 2026-05-22: 2 negativeWeek of 2026-05-29: 4 positiveWeek of 2026-06-05: 2 positiveWeek of 2026-06-19: 1 negativeWeek of 2026-07-03: 2 positiveWeek of 2026-07-24: 3 positiveWeek of 2026-08-07: 1 positiveWeek of 2026-08-21: 1 positiveWeek of 2026-08-21: 1 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Completion

24
achievements tracked
96.6%
earned "Namako Has Begun"
16.6%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerMulti-playerCo-opOnline Co-opSteam AchievementsCamera ComfortCustom Volume ControlsMouse Only OptionPlayable without Timed InputDualShock Controller Support3 DLC

8 supported languages: English, Japanese, Simplified Chinese, Traditional Chinese, Korean, German, Portuguese - Brazil, Russian

Post-launch support: 3 DLC released, first 2026-05-18 (Steam store data)

Census log

Computed from census-recorded observations only — dates are observation dates.

Recent updates

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Similarity via IGDB.