As the sixth installment to the Dragon Quest series, the graphics and gameplay remain close to the other games, with minor additions and upgrades. The graphics were vastly improved from Dragon Quest V: Hand of the Heavenly Bride, which was also for the SNES, but had rather unimpressive graphics due to being an early game on the console. Navigation remains largely unchanged from the previous games and the turn-based battles are still in first-person. The class system from Dragon Quest III returns, with minor adjustments. Despite the very high price of 11,970 yen (about 100 dollars), Dragon Quest VI sold 3.2 million copies in Japan, becoming the best selling game of 1995. The DS version sold an additional one million copies by March 2010. The story follows the traditional Dragon Quest "Hero" on a quest to save the world. In this particular installment, the heroes also have to endure the personal struggle of amnesia, as many of the main characters do not initially remember who they are. After completing a series of quests, the player learns that in addition to a Real World, there is also a Dream World, made up of people's dreams, and that there is a great evil that wants to conquer both. The Hero and his new party work together to save both worlds from the ever-growing threat.