Kingdom of Aurelia: Mystery of the Poisoned Dagger
A very nice casual point-and-click adventure with logical, fair puzzles. There are also a handful of mini-games and simple hidden-object scenes.
I played it on the most difficult mode, and had a pleasant challenge. Whenever I got stuck, straightforward thinking got me through the challenge. It's rare to find point-and-click adventures that do this so well. Kudos to the designers!
The story is trite (and the English-language voice acting atrocious) but the gameplay makes up for it.