Here is the last map I did for Ageod/Slitherine.
The Civil War 2 map ! Huge one, 19500 x 15350 px !!!
Same process, Photoshop. I also use 3ds Max to create elevation but it was a nightmare and we can't really see the effect...
Another shots of the game here:
AGEod - Civil War II The Bloody Road South
I also did all the UI, buttons, icons, menus of the game...