Taking on the role of a fish, you have to be vigilant for obstacles that include larger predators, poisonous jelly fish, aggressive sharks, hungry fishermen awaiting crispy fried fish fillets for dinner, and naval mines that are gonna tear you apart.
Always check the numbers that are going backwards in the green circle at the top right corner. It shows how much energy you have. Low energy? Not a big deal! Boost your energy by munching smaller fish. As smaller fish are eaten, you grow in size and become capable of eating larger fish.
Dont forget to collect as many collect coins as you can along the way. The more coins you collect, the higher score you gain. Once you have collected 100 gold coins, wait for a miracle to happen.