Improvements in Ver2.5

Appropriately improved to allow construction of a dam.
You can secure the amount of power generated by the 1600MW.

Change of sea level remained default.
Sea is a little deeper.
Review of the entire terrain island along with it.

Add a location to be built a harbor
Adjust the beach.
Optimization of highway.
Improvement of path of the ship.
Ensure the airfield of land.

Significant simplification of tile outside of terrain.
(File size did not change too much.)
The amount of the adjustment of the tree.