The invasion server is back with a slightly different approach.
Here is the rotation. Last updated 2023-01-17.
Hailes Castle
Motte and Bailey
Walls of Bariyye
Earnside Castle
Walls of Suno
Vyincourd Castle
Jameyyed Castle
Dhirim Town
Chalbak Castle
Samarra Castle
The Arena
Brunwud Castle
Broch
Kalran Castle
Cruaghan
Middle of Nowhere
Slezhk Castle
Bardaq Keep
Walls of Uxkhal
Mynyw Fort
Most of them were made by Taleworlds, Earnside Castle was made by gokiller, Middle of Nowhere was made by Aeneu. Mynyw Fort, Broch, Motte n Bailey was made by Adorno and Kalran Castle was made by DXaero and Ettenrocal. I edited them to be fully playable in the invasion mode. Enjoy!