Procedurally Generated Game Worlds

Game worlds created through algorithms.

This pattern is a still a stub.

Examples

The space-based computer games in the Elite series created several galaxies that players could explore using procedural generation. Several Tabletop Roleplaying Games, including Traveller and GURPS through the GURPS Space supplement, similarly have rules for generating solar systems and planets but since these algorithms need to be calculated by people these game worlds tend to be smaller.

Minecraft, NetHack, and Slaves to Armok II: Dwarf Fortress all create their game worlds or levels through algorithms based upon random seeds. The computer-based Civilization series created randomized worlds for players although some scenarios have predefined ones and some versions allow players to manually input the random seed. The Just Cause series used procedural generation to create the basis for the large gameplay areas provided in these games, and then manually added specific features to provide the background for the main story structure.

Some games uses weaker form of Procedurally Generated Game Worlds in that either the procedure is neither not that complex or does not provide that much variation. For example, the resource tiles used in Settlers of Catan are typically randomized. In another example, the Left 4 Dead series uses a small amount of procedural generation to create variations in game levels, mainly by blocking some routes and opening some other.

The site GiantBomb has a page for games that use procedural generation for any purpose, not only creating game worlds.

Using the pattern

The reason for using Procedurally Generated Game Worlds is typically to provide Replayability or to save production costs of large Game Worlds, but doing so can have the downside that it can be difficult to provide Predetermined Story Structures with the same qualities as handcrafted combinations of stories and worlds.

Designing for games to have Procedurally Generated Game Worlds requires creating algorithms that given some input can create Game Worlds. These algorithms typically require the specification of several abstract concepts that may or may not be perceivable to players (e.g. the biomes in Minecraft and the concept of solar systems, planets and moons in the Elite series) but at some level need to generate concrete elements, typically Tiles.

Randomness is nearly always an input to these algorithms, but in some cases (e.g. Minecraft) players have the option of giving the random seed and thereby be able to recreate Game Worlds if their initial random seed is known.

Consequences

Since Procedurally Generated Game Worlds can be larger than manually created Game Worlds, they to a larger extent support a Game World Exploration that gives players a Freedom of Choice of what to explore (this is for example the case in Minecraft and the Elite series). Further, since worlds in general are assumed to be large, the larger size that Procedurally Generated Game Worlds support help games maintain Thematic Consistency even if this really may be an Illusion of Open Space due to interesting gameplay being rare and mainly existing in some manually created places.

Given that Procedurally Generated Game Worlds in practice always use Randomness, they can provide Replayability through giving players new Game Worlds to explore each new game instance.

Relations

Can Instantiate

Game World Exploration, Game Worlds, Illusion of Open Space, Replayability, Thematic Consistency

Can Modulate

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Can Be Instantiated By

Randomness, Tiles

Can Be Modulated By

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Possible Closure Effects

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Potentially Conflicting With

Predetermined Story Structures

History

New pattern created in this wiki.

Acknowledgements

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