Brougere (1999) states that rules are either the result of an external regulation which is accepted by players or the
result of an agreement or a negotiated settlement between players which the game seeks to promote. In any case,
rules must be clear, organized, complete, pre-set and accepted by all players before starting a game. Without such
pre-set rules recognized by all players, a game becomes a playful activity where one or several players are free to
create their own rules or modify them according to their whims and/or game progress (de Grandmont, 2004).
However, in a growing number of electronic games, players are called upon to deduce the rules through play, thus
adjusting their decision-making as their understanding of the stakes involved in the game increases.