Stronghold Legends (2006): Stronghold Legends is a dramatic addition to the series, combing a range of new gameplay innovations including a new strategic conquest style of play and exciting new multiplayer modes. Stronghold 2 also offers players a 'castle-life' campaign, enhanced multiplayer capability and a new, innovative and exciting single player campaign. Stronghold 2 (2005): The castle-sim and siege-warfare RTS game Stronghold, the sequel to the award-winning titles Stronghold and Stronghold: Crusader, brings the series to life in glorious 3D. Stronghold HD (2012): Stronghold HD updates the classic castle building game from Firefly Studios with high definition graphics, allowing generals to view an entire battlefield on a single screen.