The world of Dragon Quest III is teeming with hidden items and secrets. Many valuable treasures are not in obvious chests but are tucked away in unexpected places. Developing a habit of thorough exploration will reward you greatly.

- Search Everything: In every town and dungeon, make it a habit to 'Search' (using the menu command) every pot, barrel, drawer, bookshelf, and even empty spaces on the floor. Many houses contain hidden Medicinal Herbs, Gold, or even Small Medals.
- Hidden Passages: Some dungeons have hidden passages that are not immediately visible. Look for suspicious-looking walls or areas that seem to lead nowhere. The Pyramid is a prime example of this.
- Well Exploration: Many towns have wells that can be entered. These often lead to small dungeons with treasure chests or even important key items (e.g., Thief's Key in Reeve).
- Night vs. Day: In versions with a day/night cycle, some NPCs or shops only appear at certain times. Tedanki, the cursed town, only appears at night.
- The Zenithian Sword: While not directly usable by your Hero in DQ3, the Zenithian Sword (found in the Dark World) is a powerful artifact that connects to Dragon Quest IV and V. It's a nice easter egg for series fans.
- Monster Medals (Remakes): In some remakes (GBC, SNES), you can collect Monster Medals from defeated enemies. These are purely for collection and bragging rights but add another layer of depth.
The joy of discovery is a core part of the Dragon Quest experience. Take your time, explore every nook and cranny, and you'll be surprised by what you find.