One of the best action-RPG of the year. Choices do play a big role in the game: about a third of the game is completely different based on important decisions. The developpers also offer significant DLC for free (a lot of quests, new cinematics, etc...) I loved the Witcher 1 (very different gameplay), but it's not really necessary to play it to understand its sequel (though it does help understand the protagonist, the different characters and the world).