US Patent 11766617 Non-transitory medium and video game processing system

A bubble creation method to be implemented by a server controls a progress of a video game. The bubble creation method includes a calculation formula specifying portion that is configured to specify one or more calculation formulas, and a bubble creation portion that is configured to create a bubble having an appearance defined by the calculation formula. The calculation formula has variables. The bubble creation portion creates a bubble whose appearance changes in accordance with a change of a value of the variable.