Reef Watch: Coral Defense
Defend a coral outpost across four lanes. Combine pearl cannons, energy-producing kelp, frost jellyfish and shield clams in 24 regions.
How to play
Get started
Select a crew card and tap a cell to deploy it. Enemies arrive from the right, so build defenses along their approach.
Play smart
Kelp gardens generate energy for later units. Balance this income with cannons for damage, jellyfish for slowing and clams for blocking.
Keep exploring
Prepare before starting a wave, upgrade important positions and use Tidal surge on a threatened lane when it is available.
Language and local progress
English, Simplified Chinese, Brazilian Portuguese and Indonesian are available in the game. Progress and records stay in this browser; they do not sync between devices. Keep site data to retain them.
Controls
Tap unit cards and grid cells; use wave, upgrade, pause and battle-speed controls.






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