This is the first official expansion pack for Neverwinter Nights. It offers a variety of new character classes, spells and feats, as well as a whole new single player adventure.

The adventure is unrelated to the original NWN plot, and is designed for level 1 characters. This said, it is possible to play using experienced characters, though the game does become very easy if you do this. The plot is fairly weak. Interesting quests pop up occasionally (such as the Oasis quest in the Interlude), though on the whole the plot is very average. This is a shame, considering that the other features added by this expansion pack really add depth to NWN world.

The new prestige classes are excellent, and really give your character something to work towards. There is some good prestige class specific loot to be found along the way, and it is rewarding to finally reach prestige level so that you can use these powerful items.

Being able to access your henchmens inventory is a good new addition with this expansion pack, as it enables you to create formidable allies with which to adventure.

There are some new environments to explore in SoU, all of which are also available to use in the toolset, though this facility is still not explained well enough for everyone to be able to use it, in my opinion.

The voice acting is a step backwards in relation to the original game, though the adventure is short enough that you won't become to frustrated listening to some characters. The adventure is very short, and doesn't feature many difficult battles (I only had real difficulty with one enemy in the entire game), which is a little disappointing.

On the whole this is not a bad addition to the original NWN, though it is by no means spectacular. The main plus point for SoU is the new character classes, spells and feats that are added. The new environments are nothing special, and the plot is pretty weak, though if you enjoyed Neverwinter Nights you will still enjoy this expansion pack adventure.