Daikaijuu Monogatari

One of the better Dragon Quest clones from the era.

Debug menu options
While the pause menu normally consists of 8 items, there are 3 other hidden menu items that lead to various debug tools. Use any of the following Pro Action Replay codes at the pause menu, then press A (deactivate the code after reaching the respective screen):
 * - Debug status screen
 * - Debug flag check
 * - Stat editor

Debug status screen
Shows some information about the current area. "Party-XY" is the player's coordinates on the current map. "People" shows the number of NPCs in the area.

Debug flag check
Shows the values of various flags and variables. The four choices in red ("naka", "ishi", "miya", and "free") choose from four pages of 256 flags each.

Stat editor
Lets you edit the stats of any character in the party using the L and R buttons.

Each stat can be individually incremented or decremented, but changing the character's level will also automatically increase or decrease all stats accordingly.