To provide a content delivery system, a content delivery server, an information processing terminal, a content delivery program and a content delivery method with which content can be delivered appropriately while accommodating variations in resource conditions. A content server receives a delivery request from an information processing terminal and a resource condition of that terminal, modifies content corresponding to the delivery request in accordance with the resource condition, and delivers the content . The information processing terminal extracts the resource condition, transmits the resource condition and/or a content delivery request to the content server, receives the content delivered from the content server, and executes the content.