More quests. More loot. More levels. 'Nuff said.
The quests are very similar to those in the main game. With a couple exceptions. And this time you'll find yourself squaring off against the plague lord, who in comparison to Bane is a bit of a pushover. But the whole expansion is a welcome diversion from the quests in the original.
There are several new creatures to capture. Therefore there are several new spells to research. The Storm based items can be exceptionally useful, particularly if you want to create complete havoc on the gem board.
You'll find a few more hours of gameplay here. Overall, well worth for Puzzle Quest fans.