The first game had artificially high sales and broke the million seller mark (not sure how much over, but probably not a lot) due to pre-release hype and the fact that it was practically the only first-year RPG for the PS2. Unfortunately, everything hyped about the game's Georama system turned out to be false, and didn't make an appearance until the sequel.
Dark Chronicle (aka. Dark Cloud 2) sold considerably under the million mark (again, I'm not sure how many exactly; Sony's especially tight-lipped about the sales numbers of games that don't meet expectations), despite being a superior title, due to a total lack of hype. Which is a real pity, as it's one of my favorite PS2 RPGs.
Sky Render - Sanity is for the weak.








