We hve no multiple gods. God is one and he's Lord Vishnu.
All others are demigods except for Lord Shiva and Brahma who created everything on instruction of God.
Not to hurt sentiments as you said..God descended as an avatar ..There are 12 till now including Lord Rama and Lord Krishna..& this happened in Hinduism ...Islam - Prophet said that he was messenger of Allah..And Jesus Christ also siad the same.
