Idle Koi Fish - Zen Pond is a free simulation game developed by VAAK SOLUTIONS AND SERVICES OPC PRIVATE LIMITED for Android devices. In this game, you get to manage your own pond and breed over 20 different kinds of beautiful Koi fish. The game features hundreds of levels to upgrade and has a relaxing stress-free sound to help you unwind.

The game's main objective is to collect and breed Koi fish to populate your pond. As you progress through the game, you'll unlock new breeds of Koi fish and upgrade your pond with different decorations and plants. The game has a simple and intuitive interface that makes it easy to play, and the graphics are cute and colorful, creating a relaxing atmosphere.

Overall, Idle Koi Fish - Zen Pond is a great game to play if you're looking for a stress-free way to unwind. The game's relaxing sound and cute graphics make it a joy to play, and the different breeds of Koi fish add an element of excitement to the game. If you're a fan of simulation games, then Idle Koi Fish - Zen Pond is definitely worth checking out.