A play result processing system includes a first storage part for storing player identifiers, each of which is unique to a player of a computer game and for storing medium identifiers each of which is unique to an information storage medium used for playing the computer game, each one of the player identifiers being associated with at least one of the medium identifiers in the first storage part. The play result processing system also includes a second storage part for storing the player identifiers and data-generation information elements, each of the data-generation information elements being necessary for generating a data element that indicates a message in a manner that is unique to the player corresponding to the message, the player identifier for each single player being associated with the data-generation information element for the player in the second storage part. The play result processing system receives data indicating a set including a play result and a medium identifier for an information storage medium used for the play; generates a message that indicates the play result contained in the set indicated by the data received at the receiver in a manner that is unique to a player, the manner depending on the data-generation information element associated in the second storage part with the player identifier that is associated in the first storage part with the medium identifier received at the receiver; and transmits the generated message to a webpage production system.