The Forgotten Sea is the endless expanse of ocean that stretches beyond the Cerulean Gulf. This is the indisputable domain of Sydon, the Lord of Storms. The sailors of Mytros and Aresia know better than to cross through the narrow straits of the Barrier Islands, because the Titan does not suffer trespassers to live. Death awaits any mortal who ventures into the territory of the ocean god.

There are hundreds of islands in the Forgotten Sea. This chapter details those that are most significant to the story of this book, but just about any adventure set on a remote island could take place here. Feel free to include encounters that would be unusual in the rest of Thylea. Sydon may have recruited powerful outside forces into his armies—or perhaps his storms have simply shipwrecked them here.