Part of the Gem series I am working on, where I make a new map from the ground up, but it is based heavily on the same kind of map.

Sapphire is based off the various editions of Sunken Defense 10-Way. New features include 4 difficulties, a perfect kill-to-cash system that never misses a kill, and a perfected anti-backwash system that prevents you from losing before a unit travels to it's destination. However, I did reduce the number of available units greatly to better balance them yet it now offers more viable builds compared to before. On the plus side, it looks a lot cleaner too!