No date announced yet. Check out the Crunchyroll article for additional information. Synopsis of the light novels from AniList:
Takuto Ira succumbed to illness at a young age and ended up reincarnating in a world that resembles the fantasy turn-based strategy game Eternal Nations. Not only did he reincarnate into his favorite game, but as the god who commands the evil civilization Mynoghra. With Mynoghra’s beautiful hero unit, Sludge Witch Atou by his side, not even legendarily difficult race traits will stand in the way of restarting their civilization! “Lord Takuto…won’t you start over with me?” Explore, Expand, Exploit, Exterminate! A tactical fantasy world is waiting for heroes like you! Join Eternal Nations today!
If they put the effort in this could be a really good show. The LN has a lot of rough edges, but on the whole it’s a great concept that goes in interesting directions. But the art does a surprising amount of heavy lifting; the depicted horror of the characters to those unfamiliar with them creates this interesting dichotomy with how a lot of the day-to-day interactions proceed, and it would be really easy to just gloss over that and make a fairly generic isekai.