Game machine and computer program thereof

A game machine includes an input device that is capable of detecting a position at which a user performs an operation, and a control device that commands the user respective positions and timings at which a plurality of operations is to be performed by the user upon the input device, and that evaluates the operations by the user: wherein the control device includes an operation determination device that determines presence or absence of an operation corresponding to a command for any one operation, on the basis of whether or not the operation has been detected within a range of determination; and when an operation is detected in an overlapped region between ranges of determination, the operation determination device allocates an operation detected in the overlapped region as an operation detected in one of the ranges, and excludes the operation in relation to another of the ranges.