In 2001, the game "Stronghold" appeared on the horizon of real-time strategy games. The game focuses on building and conquering castles. Both economic and military aspects played a role. The player had to provide the subjects with food, keep them happy, and recruit military troops. Besides, the construction of defensive structures and heavy siege equipment played an important role. "Stronghold Crusader HD" is the successor of "Stronghold Crusader" released in 2002 and uses mostly the same two-dimensional graphics. The game principle is also the same: The player has the task to gain resources and use them to build his fortress and to recruit military troops. The latter can take on incredible proportions. Up to 10000 units are possible. The goal of the game is to defeat the opposing parties. "Stronghold Crusader HD" is a real-time strategy game aimed at experienced strategists who have already successfully played the predecessors of Stronghold games and do not have high demands on the game graphics. For teenagers to whom this does not apply, "Stronghold Crusader Extreme" does not seem suitable to us. The young testers in our group were overstrained with this strategy game and resigned already during the first mission.