In **Fishdom**, follow these steps to play: 1. **Match Gems:** Swap adjacent gems to create matches of three or more. Matching gems clears them from the board and earns points. 2. **Complete Levels:** Each level has specific goals, such as reaching a score target or clearing certain items. 3. **Earn Coins:** Use coins earned from levels to buy decorations, fish, and upgrades for your aquarium. 4. **Customize Your Aquarium:** Decorate your tank with various items and add fish to create a unique underwater environment. 5. **Use Boosters:** Power-ups can help you complete difficult levels. Use them strategically for better results. Enjoy creating and customizing your aquarium while solving puzzles!