Can I use LoM for Commercial Interests?
Yes. The source-code for The Legend of Mazzeroth can be used for commercial interests provided the terms of the GPL version 3 are adhered to. Essentially this means that any derivitive works based on The Legend of Mazzeroth must also be distributed under the terms of the GPL version 3. However, any of the game data (outlined above) is not available for use in commercial products without explicit written permission from their original authors.