Slay Ravan is an interesting online flash game based on Ramayan and is presented by Fever FM. In the game a player has to adorn the role of Rama and aim arrows on the heads of Ravana. There are different types of arrows and some more powerful which can take down two heads of Ravan at a time. But if you miss to hit two consecutive times a head reappears.
You can play the game online for free here at the official website of Fever FM.