Last night I completed Puzzle Quest with my level 46 druid. Fun game. The ending was less climactic then expected, but a good game none the less. I strongly recommend Puzzle Quest. Especially if you have a portable game device like a DS because Puzzle Quest is good for filling those little gaps of time. For example, last week I took my son to the dentist. I could either read magazines filled with celebrity gossip and holiday recipes or save the world from evil. Uh, easy choice. I got a few weird looks, but they're just jealous.
If we bought Puzzle Quest instead of renting it from GameFly, I'd be more inclined to play it again with a different character class. There were side quests I skipped, and I'd like to explore the spell research feature more. When they come out with Puzzle Quest 2, I'll most likely buy it. I'd be surprised if there wasn't a sequel to this game.