Stronghold series, Stronghold Kingdoms, has surpassed 1.5M user registrations. In addition, the developer will be launching their 13th "world", the English language "World 7" on the 23rd January, due to user demand.
According to the press release, "several new staff and additional development to the game has lead to many new additions in the past year. These include a new Quests system, prize-giving Quest Wheel, Vacation Mode, Weather and Sound Effects and more, each feature proving popular with players."
Gamers interested in checking out Stronghold Kingdoms can visit the official site to register. The game was released on the 7th December 2012 and earned an 8.5/10 score in Strategy Informer's .