Dashavatar is a 2008 animated film based on the ten incarnations of Lord Vishnu.
The concept of Dashavatara Ten Avatars has religious significance. Evil has been present during the evolution of mankind and the Dashavatar have been constantly present to triumph over evil. The most famous incarnations of Vishnu are Rama, whose life is depicted in the Ramayana, and Krishna, whose is depicted in the Mahabharata and the Bhagavad Gita. The four great era or epochs in Hinduism are Satya Yug, Treta Yug, Dwapar Yug and Kali Yug. Satya Yug, the Age of Truth, will last four thousand years, Treta Yug for three thousand, Dwapara Yug for two thousand and Kali Yug will last for one thousand divine years. It is believed that three of these ages have passed, and we are now in the fourth. The four ages are said to symbolize the four phases of human evolution during which man gradually lost the awareness of his inner self. Another theory explains these epochs of time on the basis of the degree of loss of righteousness in the world. It says, during Satya Yug only truth prevailed Sanskrit Satya truth, Treta lost truth, Dwapar lost truth and Kali is left with only truth. Evil and dishonesty has replaced truth in the last three ages or yugs.This verse from the Indian epic, The Bhagavad Gita, embodies the soul of Dashavatar. Lord Vishnu, the Preserver of life, manifests Himself in many forms through the eras to wipe out evil and establish the rule of righteousness. ........
Source: Wikipedia