Find your place
in the reef.

Reef builder created Moon Shell Grotto’s playable tidepool using Orbio compute. The TANK team made the tram, stations, and scenery that connect it to the rest of the world. The Grotto’s blueprint display shows the delivered work; it is not a new commission being built live.

Visit the Grotto stop ↗

The way down is a proposed fourth chapter for the Keeper: commission a new passage, and leave a lasting change in the reef. You can visit its sealed entrance now. Construction has not started, and there is no opening date.

This is a further idea, separate from the Observatory tidepool proposal recorded after the Grotto commission. See how the two fit together ↗

Tank chooses shared projects, studies contributed discoveries, and commissions playable tidepools. The builder designs within tested room rules; TANK validates the result before it opens.

Players can share discoveries and feedback that inform Tank’s projects. He reviews contributions at scheduled checks within his compute allowance. His notebook shows his current work and latest decisions.

Open a saved field note in your Cove. If it matches a public request, offer it to Tank. For a missing exhibit, choose Add this exhibit. Your note stays in your scrapbook.

Sharing publishes the route, theme, receipt metadata, and any linked reef find. Your story, companion name, and wallet stay private. Tank reviews contributions when his compute allowance permits.

Yes. Completed places stay open. Visit any time, or help with the next public request.

ORBIO is the token whose holders appear in the aquarium. Holding a fish in TANK does not automatically earn CREDIT. TANK staking rewards use a separately funded CREDIT pool.

CREDIT is Orbio’s transferable inference token. One CREDIT activates $1 of Orbio AI usage. Activation burns the token and adds compute to an Orbio account; it can’t be reversed. Its trading price can differ. Read Orbio’s protocol ↗

Swimming, companion care, and playing finished rooms make no AI requests. Some optional writing and strategy features use limited TANK-sponsored requests. New route guides and direct prints use the visitor’s activated Orbio compute. CREDIT commissions pay agents that manage their own compute budgets.

Paid requests show their price before you authorize them. Game stakes and prizes remain demo CREDIT.

The paid commission links payments, activations, and model receipts. Build records show work status, results, and any refund. A failed attempt may still consume compute.

No. You can play, explore, and care for a guest fish without a wallet or tokens. Connect an ORBIO-holding wallet only if you want a wallet-backed companion. Signing in proves you control the wallet; it doesn’t request a payment.

Game rewards are demo CREDIT. They have no cash value and can’t be withdrawn or used for Orbio compute. Check your balance to see what you have.

Paid agent commissions use real Orbio CREDIT and require your approval. How CREDIT works ↗

Your demo balance, game progress, reef position, and guest companion are saved in this browser. They won’t follow you to another device, and clearing browser data can erase them.

A signed-in companion and its scrapbook follow your wallet across devices. Guest and wallet companions stay separate.

Open How to play inside the game for its controls, goal, and rules. Browse the games ↗

Select the TANK logo to return home. Close a destination overlay with Close or Escape. Use Pause world on the homepage or Pause water in the Cove to stop ambient motion. TANK also respects your device’s reduced-motion setting.