Symmetric Goals

## Symmetric Goals

The players have goals with the same definition, for example, to be the first one to reach a certain area or amount of points, solve a problem, find an item, or overcome the opponent.

Symmetric Goals are goals that several different players have that can be generalized to fit the same definition without changing the structure of the individual goal definitions. For example, Chess has the goals "capture the white king" and "capture the black king," which although not exactly the same, can be generalized as "capture the other player's king," which has the same basic structure and clarifies what actions are necessary to complete the goal.

Example: An archetypical Symmetric Goal is that of a simple race: to be the first player to reach a goal.

Example: A typical example of a Symmetric Goal is to surround the highest number of empty spaces in Japanese versions of Go.

### Using the pattern

If the relevant information is available, Symmetric Goals can allow players to anticipate other players' strategies, so setting the Right Level of Complexity in a game with Symmetric Goals depends on how information is presented. Allowing Perfect Information may allow Strategic Knowledge but also Analysis Paralysis so that a Time Limit might be necessary. Imperfect Information or Game State Overview may support Strategic Knowledge to a certain extent but without ending up with Analysis Paralysis. Combining Unknown Goals with Symmetric Goals is difficult, since players may infer other players' goals from the similarity in actions between them.

Further, some Symmetric Goals are Interferable Goals, e. g., Last Man Standing and King of the Hill, while others can either be totally under player's control or not, e. g., Race. The choice of whether to use Symmetric Goals that are also Interferable Goals depends on the game designer's choice of having a presence of Role Reversal, Conflict, or Competition in the game.

Goals where players engage in direct competition against each other, for example Overcome, are by their nature Symmetric Goals. In contrast, if the Symmetric Goal is defined without reference to individual players or their elements, the goal can be a Mutual Goal.

### Consequences

Symmetric Goals provide one form of Symmetry in games, and in traditional games, together with Symmetric Resource Distribution and Symmetric Information, it been a common technique in ensuring Player Balance. However, to provide a Right Level of Complexity, these games usually provide a large possible set of game states with few Closure Points and many game states that match the goal states. This usually leads players to developing different strategies and quickly achieving different positions in the game, making the players have Asymmetric Goals as subgoals towards each other even though the main goals in a game instance remain symmetric.

Mutual Goals between players are always Symmetric Goals.

### Relations

Instantiates:

Modulates: Conflict, Competition

Instantiated by: Last Man Standing, Overcome, Mutual Goals, King of the Hill, Race

Modulated by: Interferable Goals

Potentially conflicting with: Unknown Goals, Asymmetric Goals