Well its just too bad that i never had the honor to play the original game if i owned a famicon, or super famicon .
The story itself how it progress is slightly diffrent from its prequel and by that i mean its still has that rpg adventure type when a boss from a realm ( level) has been defeated, wataru and friends do to rises to another level with a secret or extra stage inbetween, the diffrence is that each realm has a discription, the enemy fighters has stats on them like power, speed, stanima and/ or magic.
Artwise its still the same art since its 2 years since the serie started, though it was 1990 so there may be some sight improvements by tape recording and colour editing and stuff compared to late 80's , but in the biggest part not much is diffrent, same can be sayed by the sound and the OP/ED parts, tough could be repetitive at some parts and episode's.
The charachters still had their personality like the 1st serie's , with some new friends, enemys , powers, magical creatures to add, and some returns as well. i really liked how they kept a lot of the chara involved throughout the show end even when it all took a darker tone in the last 5 episode's , by that
it kept the potential going and even though today it only is famous by a select few outside of japan , overall its worth a watch if u are not minded to watch a kidsshow, but prepare if ever comes a sub-version on bluray or dvd to have some deep pockets, japan import ofc, still worth it!