Thálassa did not come out of the blue! After my initial concept I was address and advised by many kind and smart people. The core of this process was developed in this thread at The Cauldron board. You may want to take a look if you are interested in why some design choices were made! Also you may find of interested these posts at my blog Zotiquest:

• In search for a Mediterranean fantasy RPG
• Thálassa: a Greek Myths Cairn hack
• The Cartography of Thálassa
• The Magic in Thálassa (part 1): Gods and Prayers