Play

Play with koi pond ideas

Design a pond, make seasonal choices, and see how your plan changes through a year.

Pondsmith: Tomorrow Mode

Choose a starter pond, plan for growing koi, and run a year through spring, summer, autumn, and winter. Earn Pond XP in Career mode or experiment freely in Free Build.

Play Pondsmith

An illustrative planning game, not a prediction of real pond conditions.

Planning a real pond? Use the pond calculators alongside the game.

Take a little pond break. Choose a game and grow your calm.

IDLE GAME · KOI COLLECTING

Kohaku Haven

Build a peaceful pond, breed rare koi, and discover the power of Dragon Scales. Your haven keeps growing while you’re away.

  • 36 koi to collect
  • Upgrades & rebirth
  • Saved in your browser
Play Kohaku Haven

Koi Felony: Glazed & Confused

One koi. One stolen doughnut. One increasingly enormous raccoon. Swim smoothly, dodge the net, and see how long you can keep breakfast.

Play Koi Felony

A free 3D survival game. Arrow keys, WASD, or touch controls. Share your high score.