Kingdom, Dungeon and Hero -- this could be good

[Rico]

Looks like a medieval/fantasy version of Advanced Tactics Gold ... hex-based, turn-based, sandbox... could be fun title to pick up.

Looks like it'll have play by email.

Kingdom, Dungeon, and Hero on Steam

Lead your kingdoms. protect your lands, conquer your enemies. Stop the fallen god Draeul. Collect the Unity Runes to prevent the Corruption Curse from destroying the realm. Armies keep you in power, Heroes do your bidding and adventure to defeat the horrific creations of the curse.

store.steampowered.com

 

[Nathangun]

Comes with an editor as well, on my wish list.

 

[Rico]

Comes with an editor as well, on my wish list.

Thought this might be down your alley