A diffusive game, comprising: a diffusive space having a plurality of regions; a plurality of variables for being put into the regions and producing actions in the regions. Each variable has an internal value, so that it has its own mode according to the internal value. A diffusive data processing unit performs a relational operation on the internal value of the variable in the diffusive space and the regions, and also produces diffusive operations. The method sets a region in the diffusive space as the triggering region and a specific action on a variable as the triggering action. When a player drives the variable to produce a triggering action, a diffusive data processing unit bases on the triggering region as the starting point to diffuse and transmit to each adjacent region according to the diffusive direction, and complete the diffusive and relational operation of the variable.