Abstract: A system and method for initiating and conducting a competitive social game using a server connected to a plurality of user terminals via a computer network. The method includes receiving, from a user terminal of a game initiator, via the computer network, a selection of a game definition, the game definition comprising a determined scoring method for the game. The method further includes receiving, from the user terminal of the game initiator, a selection of at least one participant to be invited and receiving, from a user terminal of the at least one invited participant, a game participation response. The method further includes receiving, from a user terminal of the at least one invited participant, a scoring claim based on an activity documented by the participant.