The invention provides a
wide area network real-time interactive game synchronization method. The method includes the following steps of obtaining own side input instructions of a current
wide area network real-time interactive game, storing the own side input instructions according to the
time sequence, generating at least one own side data frame through the own side input instructions and the running state of the
wide area network real-time interactive game according to a preset
frame time interval, sending an own side data packet, obtaining another party data packet which is sent by another
wide area network real-time interactive game and generated through the same method as that of the own side data packet, judging whether the difference between the currently-generated own side data frame and the frame number of the other side data frame with the largest data number in the other side data packet is larger than or equal to a synchronization critical value or not, and if the difference is smaller than the synchronization critical value, synchronously operating the
wide area network real-time interactive games. According to the method, the input synchronization frequency of the two sides can be improved when the
network delay is high. In addition, the invention further provides a
wide area network real-time interactive game synchronization device and a network
system working according to the wide
area network real-time interactive game synchronization method.