To provide a game system that makes players' play order comply with a predetermined rule but nevertheless allows, with appropriate measure, any delaying player to join the game, each terminal device constituting the system stores in a storage unit game's stage/delay information regarding all players including players operating other terminal devices, a stage updating unit updates the storage unit based on an operation entry accepted by an operation entry unit from an owner player as a play determining unit determines that the owner player's turn has come, and an operation entry received by an operation receiving unit from any other terminal device, and a delay updating unit updates the storage unit when an abort entry unit accepts an abort entry from the player or an abort notification is received, or updates delay information when stage information is updated.