For the most part, yea. I said "for the most part" because it's debatable as to wether or not Moonlight Museum and Klonoa Heroes are canon or not. Mionlight Meuseum, because it's supposed to be a prequel to DTP (though, with me, it feels more like a side-story than a prequel) but that's debatable because of the whole "fake memories" thing at the end of DTP (sorry for spoilers). And Klonoa Heroes, because it's set in an alternate universe.