Artifact-Location Proximity

Game rules that depend on technology-sensed proximities between physical artifacts and physical locations.

Many games have bringing items to specific locations as conditions for gameplay events. While this is in many cases done with both items and locations that are either fictional or virtual, it may also be done with physical ones. The pattern Artifact-Location Proximity signifies when technology checks whether these types of condition are met for physical items and locations.

Examples

The movement of teams' giant animal totems in ConQwest is an example of Artifact-Location Proximity. In the Swedish LARP Kejsartemplet, the placement of a magic stone in its receptacle removed the power from all wizards; this was implemented through sensing the stone's presence in the receptacle and relaying this electronically to bracelets worn by the wizards.

Using the pattern

Making use of Artifact-Location Proximity in a game consist of modifying physical Game Items (quite often Tools) so that they can be sensed by some technology embedded in a specific location. The modification required depends primarily on the sensing technology used, and the technology choice can also determine what actually is meant by proximity and what artifacts can trigger the proximity. For example, RFID tags can let the game design determine exactly which unique artifacts trigger conditions with a short range while a pressure plate would accept all artifacts over a certain weight placed on it.

Artifact-Location Proximity can require Extended Actions to trigger either the condition of entering or leaving the proximity of a location. This may be to control player actions (not being able to leave with the artifact immediately or having a chance of returning it shortly after it has been removed). It also provides a safeguard if the sensing technology used is deemed a bit unreliable.

Consequences

As any gameplay mechanic depending on location, Artifact-Location Proximity can give rise to Strategic Locations. Further, since Artifact-Location Proximity is quite often combined with the Deliver pattern, Physical Navigation and Player-Location Proximity are likely to become part of the gameplay.

Because Artifact-Location Proximity implies that players need to visit locations even if the game does not use Player-Location Proximity, it gives rise to several patterns related to player movement. These include Encouraged Return Visits and Traverse, but also ones stressing Pervasive Gameplay such as Changes in Perception of Real World Phenomena due to Gameplay, Physical Navigation, and Real World Knowledge Advantages.

Like Player-Location Proximity and Player-Player Proximity, the use of Artifact-Location Proximity can help Game Masters remotely control Pervasive Games and LARPs.

Relations

Can Instantiate

Changes in Perception of Real World Phenomena due to Gameplay, Encouraged Return Visits, Pervasive Gameplay, Physical Navigation, Real World Knowledge Advantages, Strategic Locations, Traverse

with Deliver

Physical Navigation, Player-Location Proximity

Can Modulate

Game Items, Game Masters, Tools

Can Be Instantiated By

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Can Be Modulated By

Deliver, Extended Actions

Possible Closure Effects

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Potentially Conflicting With

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History

Updated version of the pattern Artifact-Location Proximity first described in the report Game Design Patterns for Mobile Games.

Acknowledgements

Johan Peitz