The disclosed data generation system is provided with a monitor for displaying a game area and a touch panel, wherein in a game for displaying two operation reference units and an object which moves therebetween upon the game area, sequence data used as data for designating an operation time period for touch-operation and operation reference units are generated. The data generation system displays, upon a display unit, an editing screen including a time period information display area for displaying information of all operation time periods chronologically and a criteria unit designation area for displaying information of operation time periods of each of the operation reference units chronologically, and for displaying, upon a criteria unit designation area, information for associating information of each of the objects corresponding to each operation time period with information of the operation reference unit where display of each of the objects is started.