I highly recommend this game if you enjoy D&D (specifically 3.5 edition). The first module isn't all that great, but Mask of the Betrayer more than makes up for that. Also, Storm of Zehir and Mysteries of Westgate are also good. There is an Icewind Dale module (fan-made, I don't remember the name of the authors sadly) that is an excellent adaptation, as well as other great modules.