Pangaea and Panthalassa was an entry in a past map making competition (Theme: Pangaea). Check this forum thread for details:
Pangaea was the supercontinent that existed about 250 million years ago, which later broke up into the present-day continents. The name Pangaea was Ancient Greek for 'entire earth'. The single enormous ocean which surrounded Pangaea was accordingly named Panthalassa ('entire sea'). You will fight for control of the ancient land & sea in this board.
This map was designed to be a good map for people who have recently joined wargear, and are ready to branch out past the standard world map, but still want something very simple. It would be a good second map for someone who has never played many board games before, or a good first map for someone with more experience.
Continents on land are differentiated by colored outlines and are worth one less than the number of member territories they have.
Continents in the ocean are 'hordes' style. 1 bonus unit is given for every ocean territory you control that borders no enemy oceans.
A border with mountains prohibit attacks across them.
Attacks between Land and Sea are allowed only at harbors which are marked with an anchor.
Bonuses, Limits and Dice