What do you do after you battle Zeus on Mythology island?
Beating Zeus wins the game. You will automatically return to normal and give the 5 items to Athena for safe-keeping. She gives you the Island Medallion and you leave the island. Zeus is not seen again on the island.
(see related question)
After you recover the 5 sacred items and return them to the Tree of Immortality, they are stolen by Zeus. Hercules will help you reach Hades and Poseidon to get their help. Using the Hades Crown and Poseidon's Trident, you travel to Mount Olympus to battle Zeus and prevent his takeover of Mythology Island. (for two solutions, see the related questions)
you use the mirror to go to the front of the gate of Zeus and go to the garden of immortally then Zeus steals all the five items and go to Hercules and go to the underworld, hades will give you his crown Poseidon will give you his staff and then go to mount Olympus and battle Zeus and win then the island medallion is yours!
On Mythology Island, you must go on a quest for the Greek god Zeus. He tasks you to recover 5 sacred items from the realms of the island. However, when you return them to him, you realize that he is planning to control Poptropica with them. With the help of Hercules, and the brothers of Zeus (Poseidon and Hades), you must stop Zeus and his power-hungry scheme. (For the solution, see the related questions)
To battle Zeus at the end of the quest, put on the Hades Crown and carry Poseidon's trident : you will grow to the same size as Zeus. (Both of you will appear smaller in the fight.) After you finish the island, you can still wear the Hades Crown and grow larger by pressing your spacebar (this does not affect any of the other quests).
In Greek mythology There is told to be no more gods with more power of Zeus because of the term "Zeus the God of the Gods" so because of that there is no one in Greek mythology with the power stronger than Zeus But in some ways Poseidon and Zeus in a battle it would be close and if Poseidon Gets Zeus to the water Poseidon would be the winner because of Poseidon's Strength