It's 1315, Robert Bruce has defeated Edward II at Bannockburn and now his brother, Edward Bruce, is making his way to Ireland. Get ready to defend Carrickfergus Castle against the Scottish attack …

Richard De Burgh, the Red Earl of Ulster, needs a constable to take charge of the defences of Carrickfergus Castle. The castle controls access to Belfast Lough and the Scots will be keen to take it. As constable you must assess the castle's defences and use your men to defeat any Scottish attacks. The better your miltary performance, the higher the wages. If you succeed in your post you will be rewarded with an earldom but if you fail you will be dismissed without pay!

Carrickfergus castle has stood guard over Belfast Lough for over 800 years. The Siege! app contains a mission-style game and an interactive map that explores Anglo-Norman military strategy and the defensive architecture of the Carrickfergus Castle. The game is best played on location at the castle and uses interactive role-play and atmospheric video to bring the 1315-16 Bruce siege to life. The interactive map contains photographs, drawings and fact-files that illustrate how the castle withstood a year long siege.

Supported by the Creative Industries Innovation Fund and produced in association with the NIEA.