I am currently playing Indigo Prophecy. It is probably best described as an "interactive movie". It is very cinematic but does have user-controlled dialogue. Because of that, I am considering it an RPG. Crimson Sea has user-controlled dialogue.
Granted, I am painting with a broad brush here.
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Ah, Fahrenheit. THe last hope for the adventure genre and people try to label it as an rpg. Oh god.