The first three Dragon Quest games are part of the same story, and Dragon Warrior III is the first game chronologically, as well as the third game that features the hero Erdrick (Loto in the Japanese releases and Game Boy Color localization). The story follows "the Hero" who is tasked with saving the world from the archfiend Baramos. Gathering a group of companions into a party, the Hero must travel the world, stopping at various towns and locations, and find his way to the Demon Lord Baramos's lair.
Dragon Quest III is noted for greatly expanding upon the gameplay of the original Dragon Quest and Dragon Quest II. The game uses basic role-playing video game conventions such as leveling up by gaining experience points and equipping items. The battle system is turn-based like the other games in the series, though the remakes incorporate various interface changes from later titles. These include simpler door opening, a bag to store items instead of keeping them at a bank, quick item sorting with "Tidy Item" and "Tidy Bag" command, and a "Full HP" command to automate the process of casting healing and status restoring spells. And while earlier Dragon Quest games were non-linear in structure, Dragon Quest III featured an even more open-world experience. It also allowed the player to freely swap characters in and out of their party and introduced the day/night cycle in which certain items, characters, and quests are only accessible at specific times of the day.
Dragon Quest III features a class system, in which each character has a certain class. At the start of the game, the player begins as a single male or female hero but is able to recruit members at the local tavern. While the Hero always keeps the Hero class, the other characters can choose to be any of the following of either gender: Soldier, Fighter, Pilgrim (Cleric), Wizard (Mage), Merchant (Dealer), Goof-Off (Jester), Sage, and Thief which was available only in the later versions. The choice of class greatly affects the character's stats and spells he or she can learn.