Siege of Avalon is an action game released in 2001 by Global Star Software. The game was released for PC (Windows).

Siege of Avalon is a game set in a dynamic fantasy world full of magic. The story is divided into six chapters, the plot of which revolves around the eponymous city of Avalon - a citadel that is the capital of the shaky alliances of seven human lands. The player takes on the role of a young hero who, wanting to inform his brother about the death of their father, arrives in a merchant boat to Avalon, which takes place at the climax of the many years of war between the Alliance of the Seven Kingdoms and the horde of nomadic invaders Sha'ahoul, led by the priestess Mithras. The protagonist discovers a treacherous plot and saves his brother from death. The protagonist must turn the hopeless fate of the people of the besieged Avalon and stop the conquest of the city and the fall of the capital. The title is a classic single-player cRPG in isometric projection. Players can freely create their character using a number of traits and skills (which can be improved through level progression) and travel with up to four members of the gathered team.