Jann180: "platform" game? Do you mean platformer? There is 0 platforming in DD. You're also factually wrong about there being no story.
You don't need dialogue options for a game to be an RPG (nor to have a good story). And you don't need to have a proper story either - read the rest of the thread.
And how is this a Mario game? Just, what? I couldn't think of a game that's more apart from being that and not just thematically, but also mechanically.
And of course you had to say something isn't a "true RPG" aka "my definition of RPG".
grassBlade: Insofar as "my definition", you're right...we all see the world from our own perspective, experience.
platform/platformer ... I'm probably as old as your grandparents... the only platform game I remember playing was the original LodeRunner, which programmatically, thematically, and experientially is one and the same with Mario Bros, and to a good degree DD. As I said, DD has no story (let alone 'good') -- a story would only get in its way.
I'm sorry to say, but yes, you do need dialogue options for a game to be an RPG. This is true in both, pen and pencil and cRPGs.... In both cases, the DM asks "you see blah blah; what will you do?" or "you learn blah blah, what do you say?" Where is that in DD?
remember: RPG stands for
Role playing game. Without dialogue, how do you role play? By slashing/hacking? By equipping different weapons/belts/trinkets/hair styles? (actually, that last one may be role playing)
Definitions exist so that we can agree on something instead of it being a subjective opinion. Then you come here saying "no, it's what I say it is".
I don't understand what you're even trying to say with the platformers. DD isn't a platformer. Again, you're factually wrong saying DD has no story.
How do you role play without dialogue? For example Dark Souls. You choose your race origins, your class, your background can be anything you want. And in the game, your actions speak for who you are, not words. And yes, in that game, even your different equipment can tell more of your PC as the items themselves often have a history or associations of their own.
BTW you said it needs to have dialogue options before, now you're saying dialogue itself. You also don't need these options for a game to be called an RPG or have a good story. Some of the Final Fantasy games are a good example of this (6 IIRC doesn't have any dialogue options and it is still an RPG and it is still a hell of a good story).