Reef Bloom is a free browser-based ecosystem game where you build and nurture your own coral reef. Place coral on a grid, hatch fish that swim freely through your reef, and watch your underwater world grow more vibrant over time. There is no failure state and no time pressure — you are a steward, not a controller. Reef Bloom is designed as a calm, creative experience that rewards patience and curiosity.
Seasonal events are here — limited-time events with exclusive species and event passes. Collect clams, complete daily quests, and unlock rare creatures before time runs out.
Launched biome travel system with Seagrass Basin and Deep Twilight. Added grazer species, dual-biome fish, and bioluminescent coral. Three save slots with per-biome progress tracking.
Reef Bloom is free to play and supported by optional rewarded advertisements. Watching an ad is always your choice and grants in-game rewards like Bubble Energy and Pearls. Questions or feedback? Reach us at contact@reefbloomgame.com.
Environment: Shallow (1–5 m)
Dense seagrass meadows with sandy patches and occasional rocks. Grazers generate bonus Bubble Energy while feeding. Dual-biome fish explore freely between Coral Reef and Seagrass Basin.
| Species | Type | Rarity | Cost | Access |
|---|---|---|---|---|
| Tropic Blenny | Grazer | 🟪 Uncommon | 5 🫧 | 🌿 Seagrass |
| Sea Urchin | Grazer | 🟦 Rare | 10 🫧 | 🌿 Seagrass |
| Parrotfish | Grazer | 🟩 Super Rare | 25 🫧 | 🌿 Seagrass |
| Rabbitfish | Grazer | 🟨 Epic | 60 🫧 | 🌿 Seagrass |
| Yellow Tang | Dual-Biome | 🟦 Rare | 10 🫧 | 🪸 Coral 🌿 Seagrass |
| Blue Tang | Dual-Biome | 🟦 Rare | 10 🫧 | 🪸 Coral 🌿 Seagrass |
| Cleaner Shrimp ✦ | Premium Visitor | 🟨 Epic | 30 💎 | 🌿 Seagrass |
| Manta Ray ✦ | Premium Visitor | 🟧 Legendary | 60 💎 | 🌿 Seagrass |
Yellow Tang and Blue Tang unlock in Coral Reef and automatically explore Seagrass Basin. All other Coral Reef fish remain in their home biome.
EFFECTIVE DATE: MARCH 27, 2026
Reef Bloom is a free browser game. We are committed to protecting your privacy. This policy explains what data, if any, is collected when you play.
Reef Bloom stores your game progress (reef state, coral, fish, currency) locally in your browser using localStorage. This data never leaves your device and is not transmitted to any server.
Reef Bloom may display third-party advertisements served by Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website and other websites. Google's use of the DoubleClick cookie enables it and its partners to serve ads based on your visits to this site and other sites on the Internet. You may opt out of personalized advertising by visiting Google Ads Settings or www.aboutads.info.
Reef Bloom uses Google Analytics to collect anonymous, non-personal usage data such as page visits, device type, and browser. This data helps us improve the game and is not used to identify individual users.
Reef Bloom itself does not set cookies. Third-party ad networks may set cookies subject to their own policies.
Reef Bloom is intended for general audiences. We do not knowingly collect personal information from children under 13.
We may update this policy from time to time. Continued use of the game after changes constitutes acceptance of the updated policy.
Questions? Reach out via the project's GitHub page.
EFFECTIVE DATE: MARCH 27, 2026
By playing Reef Bloom you agree to these Terms. If you do not agree, please do not use the game.
Reef Bloom grants you a limited, non-exclusive, non-transferable license to play the game for personal, non-commercial purposes.
Pearls and other in-game items are virtual goods with no real-world monetary value. They cannot be transferred, sold, or exchanged outside the game. We reserve the right to modify, reset, or remove virtual items at any time.
You agree not to:
Reef Bloom is free to play and supported by optional rewarded advertisements. You may choose to watch ads to earn in-game currency. Ad availability is not guaranteed.
Reef Bloom is provided "as is" without warranties of any kind. We do not guarantee uninterrupted or error-free operation.
To the fullest extent permitted by law, we are not liable for any indirect, incidental, or consequential damages arising from your use of the game, including loss of game progress.
We may update these Terms at any time. Continued use of the game constitutes acceptance of updated Terms.
Questions? Reach out via the project's GitHub page.