Classic RPG that everyone needs to play before they die!
The class changing system is one of the best in any role playing game. They have classes like Hero (there is only one hero of course), Warrior, Jester, Mage, Cleric, Thief, Dealer and Sage. The battle system is like any other Dragon Warrior game. There are also a lot of fun mini games (monster metals and the track game [forget how to spell it]), and when you beat the game there are even more after quests for you to do. This game should keep you busy for a while.
You might want to play Dragon Warrior III over a few times since there are so many ways of completing the game. There are 9 different character classes, selectable genders, and numerous personalties that will keep you playing over with different parties. You might just get addicted to Pachisi or betting on Monster Battles. You may even completely concentrate on collecting Tiny and Monster Medals. You could even be focused on collecting as much Gold as possible to purchase the latest weaponry. There is so much stuff to do that you'll keep coming back for more.