They included a handy invitation on behalf of the UCP organisers for developers, testers and translators to help with the project. In July, FireFly Studios, the developers of the Stronghold series, promoted the voluntary project in a YouTube video. The patch can be installed using a simple installer provided Stronghold: Crusader is installed. Altogether, it’s good news for any Stronghold: Crusader players who have been waiting for a reason to play the game again. The UCP also brings new AI castles to the game. These change the way skirmishes play out. Among the changes the update brings are bug fixes that moderate the behaviour of units and balances to improve aspects of the game, from the rate of attack waves to recruitment speed.