Defenders of Delphi. Based on a real historical event, the marching of the Gaulish army against Delphi in 279 B. C., this is the first adaptation of the fateful clash of those days into a mobile game. In Defenders of Delphi, you must protect the Temple of Apollo by eliminating the invading army of Gauls, as they pass through to reach the fabled land of Delphi.