A system for controlling output of a dynamic lighting scene by a first and a second lighting unit within a common lighting area, the system comprising: the first lighting unit; the second lighting unit; at least one memory module configured for storing a data code sequence representing pre-defined lighting characteristics associated with a plurality of sequential steps of the dynamic lighting scene, the plurality of sequential steps being a sequence of steps; at least one processor module configured for processing the data code sequence to determine from the data code sequence the lighting characteristics associated with the plurality of sequential steps, wherein each of said first and second lighting unit comprises an illumination module configured for outputting the lighting characteristics associated with the plurality of sequential steps of the dynamic lighting scene as determined by the at least one processor module, and wherein the illumination modules of the first and second lighting units are configured for outputting the lighting characteristics of the plurality of sequential steps of the dynamic lighting scene in a substantially non-synchronous manner, wherein at least one of the illumination modules of the first and second lighting units is configured for outputting the lighting characteristics associated with the steps in the sequence of steps of the dynamic lighting scene in a substantially randomized manner, characterized by: wherein the illumination modules of the first and second lighting units are configured to randomly vary the time duration of output of at least one of the steps in the sequence of steps of the dynamic lighting scene; wherein at least a first and a second sequential step in the sequence of steps of the dynamic lighting scene are associated together and wherein when the first step is randomly output during outputting of the dynamic lighting scene, the illumination modules of the first and second lighting units are configured to also output the second sequential step associated with the first step automatically. the first lighting unit; the second lighting unit; at least one memory module configured for storing a data code sequence representing pre-defined lighting characteristics associated with a plurality of sequential steps of the dynamic lighting scene, the plurality of sequential steps being a sequence of steps; at least one processor module configured for processing the data code sequence to determine from the data code sequence the lighting characteristics associated with the plurality of sequential steps, wherein each of said first and second lighting unit comprises an illumination module configured for outputting the lighting characteristics associated with the plurality of sequential steps of the dynamic lighting scene as determined by the at least one processor module, and wherein the illumination modules of the first and second lighting units are configured for outputting the lighting characteristics of the plurality of sequential steps of the dynamic lighting scene in a substantially non-synchronous manner, wherein at least one of the illumination modules of the first and second lighting units is configured for outputting the lighting characteristics associated with the steps in the sequence of steps of the dynamic lighting scene in a substantially randomized manner, characterized by: wherein the illumination modules of the first and second lighting units are configured to randomly vary the time duration of output of at least one of the steps in the sequence of steps of the dynamic lighting scene; wherein at least a first and a second sequential step in the sequence of steps of the dynamic lighting scene are associated together and wherein when the first step is randomly output during outputting of the dynamic lighting scene, the illumination modules of the first and second lighting units are configured to also output the second sequential step associated with the first step automatically.