Rat now has stronger castles. One of them looks like wolfs, other one like Emir, one of them has really big walls, and one is really BIG. Big castle is rat7.aiv.
Installation:
Backup files rat1.aiv, rat2.aiv, rat3.aiv, rat4.aiv, rat5.aiv, rat6.aiv, rat7.aiv and rat8.aiv in Stronghold Crusader\aiv folder and paste new files there.