The gameplay is quite simple: you have to complete a set of challenges by catching different fishes, and if you manage to do that, you can unlock the next level. The gameplay is similar to a classic video game, but the game world is infinitely large, and you can explore it from your phone or tablet. You will have to catch different fish to unlock the next level. 

In the gameplay, you can complete the challenges by unlocking new levels. Each level is a new environment, and you can access it by completing the challenges. On your way, you will see new fish. If you are lucky, you can also find rare fish.