In this case, the "RPG" category stands for "Rail Playing Game." Your party, or rather, pair of adventurers wanders around on rails (able to avoid environmental hazards as well as any sense of discovery) wandering into the exact same scripted encounters at the exact same spots every time you revisit an area. Can't beat it? Go back to a previous area and replay it (and replay it and replay it) to level up a bunch of times and then try again.
First, I have played and beaten each Dragon Warrior/Quest game that has come out in America. (with the exception of Dragon Slime, haven't dedicated the time yet) I love the series. More than FF. I love the Final Fantasy series too, but the Draagon Quests have always had just the right attitude and personality to draw me in. This entry in the series is NOT an RPG in any way, shape or form. It's a rail shooter if I must classify it. However, it's basically the only Arcade-like DQ ever, and I think as such it's a good game. It's not an in depth, full blown RPG like many DQ fans are used to. But it's still lots of fun. I probably won't buy this one, but if they made a 2 player version (not just 2 player mini-games), I'd buy it in an instant. The play is fun and energetic, the story is ok so far, and the graphics are exactly as would be expected based on recent entries. Definite rental with some buying potential.
I was somewhat disappointed that the final boss required some serious grinding to defeat, but I found the game to be rather fun in the long run. The graphics are nothing to write home about and the controls were not as precise as I'd preferred, but the core gameplay was surprisingly enjoyable.
I'd rate this as an above average title that RPG fans should enjoy.