Queen of the Castle is a slot game developed by Nextgen Gaming. The game has a medieval theme, with a castle and a queen as the main symbols. It features five reels and three rows, offering players 576 ways to win. The game includes various special features, such as wild symbols that can substitute for other symbols, and a bonus round that awards free spins. The castle symbol appears in the game's top row and can increase the number of ways to win up to 3,087. Queen of the Castle also has a gamble feature, allowing players to potentially double or quadruple their winnings.