Don't believe in most of the American reviews. Portuguese, Russian, English and Spanish gave much better reviews.
Your adventure starts in a small village, there you'll have a test that will make you a true Dragon Slayer. You start with a main class, warrior, rogue or mage but your not limited to that class, you can train your character freely. Further in the game you become a Dragon Knight this will give you the ability to trasform into a dragon that is suprisingly easy to control and fun to so, and you'll have your own battle tower, where you can train, change apperence, buy poitions build your own creature with parts of fallen enemies, and untrain all your skill points.
There are many ways to complete a quest, sometimes an NPC may sound like is lying, so, what to do? You can either take the long way or reads their minds!!! Yes that's right, read their minds, this skill is quite usefull to take shortcuts in quests, BUT there is a cost, you must pay experience points to use it, so do it wisely.
One of the most exciting part of the game is when you attack flying fortresses that will prove to be a challenge.
The graphics are great but not amazing, the music is praticly a master piece that won some prizes, the voice acting is great and will take some laughs out of you. But what's wrong on the xbox 360 version? Gameplay, not the dragon gameplay but the ground character gameplay, they didn't do the same as in the pc version they a lock on mode that is quite a bummer except when your playing with a rogue or mage based character.
You don't need to play the previous games to understand the story.
I don't recomend this game, unleess you are an hardcore player or just whant a challenge.