If Hildar is the duel/battle area, a separate city should feature a marketplace. Perhaps its name could be coin-based, thus unleashing the Mighty [Savii] Bucks of Myntheim...
Possible glitch: while approaching from the west, I found my character trapped in the castle's southeastern chamber. The character (Helmer) could still move but was limited to a square space approximately twice the width of the character sprite. As no memory alert presented itself and therefore the page was fully loaded, my suspicion was that the walking script may have simply malfunctioned on the limited DSi browser. I was unable to reproduce this error in any state.