An advertisement for an English translation of the PS1 remake for Dragon Quest IV appears on the back of the instruction manual for Dragon Quest VII, but it was never released.
No monster in the series is just called a dragon? Each drake has a descriptive noun in it's name.
That Orgodemir is the only final boss in the series immune to Sap?
A popular misconception states that the Japanese government has forbidden Square Enix from selling Dragon Quest titles on weekdays to prevent children playing hooky. This was the publisher's own decision after several children skipped school (and adults left work early) to purchase their copy of DQIII.