Technically speaking, Dual Hearts doesn't come anywhere close to the quality shown in some other PS2 games, however it does show an amount of style and creativity rarely seen in games. Building on the premise of entering the dreams of other people, the game gives artists the thing they want most - freedom. As I played through the game, it was very clear that the artists used every bit of it and really let their imaginations soar. Each level has its own personality and does a great job of reflecting the personality of the person who is dreaming it. The most noteworthy of these effects comes when you enter the dream of a little girl and the entire world is drawn in crayon. To add to the coloring book world, the artists made everything except your characters 2D. This is an effect that is played to the max of its abilities even going so far as having your character struggle to pull 2D objects into his 3D world or transitioning levels by turning the page. Ever wondered what dogs dream? You'll find out here.
Like the graphical presentation, it is not the most technically sound...uhm, sounds ever produced, but they do exhibit their own uniqueness. However, they still lack that certain flair the graphics do and at times come off as cheesy.