Final Fantasy III free:

Final Fantasy III - a story about rescue of the world from approaching Darkness. You should meet a young man suffering with amnesia, to visit a den of Bahamut, to turn into Lilliputian and to battle with a huge rat, to get a ship from Vikings, to visit a village living in the fear before the tyrant and to talk to seers, having learned that the destiny orders to the above-mentioned young man to appear in a terrible black tower near mysterious whirlpool.