KATOA: Oceans 4+

Play the game. Save the world‪.‬


Designed for iPhone

    • 4.2 • 24 Ratings
    • Free
    • Offers In-App Purchases

iPhone Screenshots


Become a Guardian of Light! Defend the oceans from the toxic Blight and build breath-taking underwater habitats in KATOA.

Just by playing, you’ll earn real money that will help fund environmental projects from around the globe that urgently need your help!

Create reefs filled with colorful corals. Invite turtles, rays, dolphins, parrotfish, and other exotic sea creatures to your safe havens, and bond with them through their stories and shared adventures. Defeat the malignant Blight; foul invaders created from the ocean’s pollution. Restore these magical underwater worlds and climb the leaderboards of ocean defenders!

Be a hero. Play the game. Save the world.

■ Earn real money that goes to saving our oceans just by playing the game

■ Meet a colorful cast of characters, with unique personalities and lots to say

■ Explore the world’s oceans and discover new biomes to reclaim and expand

■ Design your own havens with a variety of beautiful Flora

■ Defeat the toxic Blight that pollutes the world

■ Assemble a team of adventurous Fauna to embark on Quests and bring back valuable resources

* Please note: KATOA works best on iPhone 8 and above.

Need help? Just contact support@sankaristudios.com! We'd love to talk to you.

What’s New

Version 1.3.1

* We've squashed a few bugs from our big Leaderboards and Teams release with this update.
* We've also added local notifications so you can stay on top of your beacons, quests, and other activities to keep you at the top of the leaderboards.
* Players can now earn coins as leaderboard prizes to update their avatars.
* We've increased the Guardian Rating rewards for everything across the board!

Ratings and Reviews

4.2 out of 5
24 Ratings

24 Ratings

daestwen ,

Love the concept

I really love the idea of supporting a cause with a game - and I love the environmental outreach and impact. However, the game itself feels a little underwhelming - once through the tutorial the amount you’re able to do slows down dramatically. Not necessarily a bad thing, but it meant I had to put it down when I wanted to interact with it more. Looking forward to where this game goes! Good luck!

faenovak ,

Amazing concept & game

Love this! Definitely a great idle game with an important theme. Could use a bit more to do in between the frequent raids, but extremely excited to see where the developers take it. Love the lack of ads :)

Saturnalias ,

Keep up the good work

Edit: Newest updates have resolved a lot of the issues with repairing/restoring polluted plants. Some quests cannot be completed (“Talk to Sophia” when her speech bubble is greyed out) or not enough enemies to defeat in Shackleton’s Ship to finish “Defeat 10 enemies” when it cannot be expanded. Overall, updates have vastly improved the game. Looking forward to more things to do and more biomes. QOL improvements could include: “restore all”, “repair all”, “harvest all”. Fewer clicks will result in less frustration. The game itself is beautiful and soothing.

Developer Response ,

Hey Saturnalias, really appreciate your feedback above. I'm sending this to our team to help us improve. We're always looking to make KATOA better, and hope you'll give it another shot with future updates.

App Privacy

The developer, Sankari, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


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