An activating apparatus (300) is arranged to conditionally activate an interactive application associated with a digital program. The activating apparatus (300) has a receiving means (310) for receiving program information of the digital program and application information regarding the interactive application, a detecting means (320) for detecting a program mode of the digital program, the program mode indicating how the digital program is being run, and an obtaining means (330) for obtaining an activating parameter from the application information, the activating parameter indicating the interactive application has at least two mutually different portions, at least one of the at least two portions is conditionally be executed in dependency on the application including an the program mode. with the program mode.