Patent ID: 8317600

Claim:
A game device comprising: a rule storage unit for storing rules of a computer game comprising plural unit games, each of which can be completed when a requirement for completion is satisfied, the rules comprising rules stipulating the requirement for completion of each of the plural unit games and rules stipulating a content of play of each of the plural unit games; a notifier for outputting a signal for informing a player of a candidate for a change module for changing a level of difficulty for completion of at least one unit game among the plural unit games; a difficulty changer for rewriting a rule stored in the rule storage unit, when the candidate for the change module is selected to be used by the player, so as to change the level of difficulty for completion of the unit game in accordance with the selected change module; and a play processor for conducting a unit game selection process for enabling the player to select one from among the plural unit games, a play execution process for executing play of the selected unit game in accordance with the rule stipulating the content of play stored in the rule storage unit, and a decision process for deciding whether or not the unit game is completed on the basis of the rule stipulating the requirement for completion stored in the rule storage unit.