Mystery Quest/Walkthrough

Progression
The progression for this game, whether it's Hao Kun no Fushigina Tabi, or Mystery Quest, is the same. You begin the game outdoors, where you must proceed in one general direction until you reach a castle. In the first world (and the third world in Hao Kun) you must proceed to the right, while in the second world, you proceed to the left. Each world has two castles which you must clear. These castle typically contain an item that you will need in order to proceed through the rest of the world, or to the next world below. Each castle has the same basic arrangement: there is a front layer and a back layer. Progress through the front layer is generally achieved by moving left to right, while progress in the back layer is achieved by the reverse. Each castle is broken into roughly four parts. You must find the first door from the front layer to the back layer, and locate a method in order to return to the front method and proceed to the next door and so on. In each castle, you need to collect a power-up, followed by a symbol in order to exit the castle.

Differences between versions
The American NES version is only a portion of the entire Japanese FDS game. As a result, the walkthrough that follows is actually for Hao Kun no Fushigina Tabi since it contains nearly everything that you will ultimately encounter in Mystery Quest. While the general flow of the outdoors is similar between the two versions, there are differences. In general the American NES version of the outdoors is simpler. The following is a list of comparisons between the two versions which you should note when reading playing Mystery Quest.
 * You begin the game with the ability to use Magic, and the power of the Faster Boots.
 * There is no Magic Wand, and the Roll of Magic, found in the first castle, gives you the second degree of magic.
 * The entire third world is omitted in Mystery Quest. There are only two worlds and four castles to complete.
 * The outdoor sections are shorter and the castles occur sooner in Mystery Quest.
 * The first castle appears at 1-K, and the second castle appears at 1-Q.
 * The second world is also accessed from 1-Q, and the third castle appears at 2-G. (The fourth castle still appears at 2-A.)
 * The first and third castles are actually Castle V from Hao Kun. The second and fourth castles are both Castle VI.  The first four castles do not appear in Mystery Quest.
 * As a result of you not having the Power Helmet in the first version of Castle V, you cannot make use of the shortcuts that can be found with the Power Helmet's help.
 * You get the Roll of Magic and the Power Boots from the first castle.
 * You get the Power Helmet from the second castle.
 * The Super Mantle is found in the third castle.
 * The Crystal of Magic is found beyond the fourth castle in 2-A.