Jeremy Jurksztowicz (eclectocrat) has released a full version of his graphical, turn-based rougelike Mysterious Castle for OSX and iOS. The game purports to be both fast-paced and turn-based and playable in both short and long bursts. From what I see, the menu system is clean, the pixels are pretty, and the battles are somewhat frantic (within the confines of being turn-based).

Mysterious Castle presents dialogue choices and environmental obstacles to overcome, set in a procedural content generated world with an overhead map. The trailer does a great job of illustrating what the game has to offer:

In meeting the Annual Rougelike Release Party 2011 deadline, Mysterious Castle joins a couple dozen other rougelikes in the event (in case you want even more rougelikes in your life).

Players can purchase Mysterious Castle for $2.99 via the iTunes store, however it’s not recommended for iPads right now and is only tested to be iPhone 4 compatible.

The current download via IndieDB for OSX seems to be limited to Intel Macs (and the developer warns of some LION incompatibility). Those who grab the game for free are encouraged to donate via Paypal.

Thankfully, Jeremy is committed to porting the game to Windows once he receives enough donations to purchase the OS (or if someone can donate XP or higher).