Game world design

Worldbuilding for games, where the audience walks around inside the world and pokes at its rules: how the world serves play, the main world structures, spatial design and navigation (Lynch's five elements, weenies, guiding the player), pacing, environmental storytelling, lore delivery, reactive factions, procedural generation, scale and density, the MDA framework, a level design process, Godot implementation pointers and playtesting. General method is on worldbuilding fundamentals; abilities as mechanics are on magic and technology; engine specifics are on nodes and scenes and the other Godot sheets; general usability thinking is on UX and UI. Invented examples are marked.

The world serves play

In fiction the world serves the story; in games it serves play, and the story is one of the things play produces.

The best game worlds make mechanics and fiction say the same thing: the world explains why the player can do what they can do, and the rules express the world's themes.

Ludonarrative dissonance

Clint Hocking coined ludonarrative dissonance in October 2007 on his blog Click Nothing, in a post titled "Ludonarrative Dissonance in Bioshock". His argument (paraphrased): BioShock's gameplay rewards self-interest (the Little Sister choice), while its narrative forces the player to help another character without choice, so the game argues one thing through play and the opposite through story, and the contradiction breaks the player's engagement.

World structures

Hybrids are the norm: an open world containing linear dungeons, a hub with procedural spokes, a linear game with optional side areas. Designing an open world in depth (landmarks, density, traversal, gating, streaming) is on open-world design.

Spatial design: making spaces legible

Lynch's five elements

Kevin Lynch's The Image of the City (MIT Press, 1960), based on studies of how residents of Boston, Jersey City and Los Angeles mentally mapped their cities, argued that people build a mental image of a place from five kinds of element. A city that supports a clear image is imageable (or legible). Level designers borrowed the framework because players have to do exactly what Lynch's residents did.

Weenies

Walt Disney's term weenie (also spelled wienie) names a design element that deliberately draws visitors' attention and pulls them through a space. The term came from film production, where sausages were used to direct dog actors. Sleeping Beauty Castle at the end of Disneyland's Main Street is the classic example; Cinderella Castle, Spaceship Earth at Epcot and the Tree of Life at Animal Kingdom do the same job. Don Carson's Gamasutra essay on environmental storytelling (2000) carries the lesson to games: put your most decorative elements where you want the audience to go, and let them draw people on like a dangling carrot (paraphrased).

In games: a lit tower on the horizon, a column of smoke, a beam of light, a strange tree. The player walks toward it without being told to.

Guiding the player

"Yellow paint" and its critics

Yellow paint is the shorthand for brightly colored marks on climbable ledges, ladders and breakable objects. The debate flared around the 2023 Resident Evil 4 remake demo and again around Final Fantasy VII Rebirth in 2024. Critics call it immersion-breaking and patronizing, a patch for environments too detailed to read; defenders point to accessibility and to players who otherwise get stuck. Middle paths:

• Design readable geometry first; add markers only where playtests show confusion.
• Integrate marks into the fiction (worn handholds, chalk marks, a faction's paint).
• Offer a toggle or intensity setting.
• Keep markers consistent: one color, one meaning, everywhere.

Pacing and intensity

A world is experienced over time. Plan intensity like a film editor.

• Tension and release: alternate combat with quiet exploration; danger with safety; tight corridors with open vistas (Carson makes the same point about contrast in theme parks).
• The interest curve: Jesse Schell's The Art of Game Design: A Book of Lenses (2008) devotes a chapter to interest curves: a strong hook at the start, rising interest with peaks and dips, and a climax near the end. Plot your level or quest on one and look for flat stretches.
• Safe rooms: save points, camps, hubs and towns are the "release" beats; make them feel safe (warm light, music, NPCs).
• Teach, test, twist: introduce a mechanic safely, test it under pressure, then combine or subvert it.
• Density rhythm: open worlds need points of interest at intervals the player won't get bored crossing.

Environmental storytelling

Don Carson, for many years a senior show designer at Walt Disney Imagineering, wrote "Environmental Storytelling: Creating Immersive 3D Worlds Using Lessons Learned from the Theme Park Industry" (Gamasutra, March 2000). His premise: "One of the trade secrets behind the design of entertaining themed environments is that the story element is infused into the physical space a guest walks or rides through." Games can do the same.

Real examples, briefly: Carson cites Half-Life, which tells much of its story through the player's experience of the Black Mesa facility rather than through cutscenes; BioShock's Rapture tells the city's collapse through architecture, posters and audio logs.

Embedded vs emergent narrative

Henry Jenkins's "Game Design as Narrative Architecture" (in First Person, eds Wardrip-Fruin and Harrigan, MIT Press, 2004) describes four ways game spaces carry story:

Lore delivery

Fragmentary vs explicit lore. FromSoftware's games (Dark Souls and its successors) are the best-known example of fragmentary lore: story scattered across item descriptions, architecture and sparse dialogue, leaving players to reconstruct it (communities form around the reconstruction). Explicit lore (codex entries, narrated recaps) serves players who want clarity. The fragmentary style needs a consistent hidden answer or the fragments won't add up; it is the game equivalent of Jo Walton's "incluing" (see worldbuilding fundamentals).

Factions, reputation and reactive worlds

Factions give a world politics players can act on. Faction design fundamentals are on societies and cultures.

Rules: show the player why standing changed; make consequences visible in the world, not only in a menu; and budget carefully, because every branch multiplies content.

Procedural generation for worlds

Procedural oatmeal: Kate Compton's warning that you can generate thousands of bowls of oatmeal that are mathematically different but perceived as the same. Players value perceptual uniqueness, not combinatorial counts. Fixes: fewer, more distinct building blocks; rare hand-made "set pieces"; generated content that has consequences (history, factions) rather than only variation.

Hybrid authoring: hand-author the critical path, landmarks, towns and story beats; generate the connective tissue (terrain, foliage, minor caves), then hand-edit. Seeded generation keeps results reproducible for testing.

Scale and density

Rule of thumb: a smaller, denser world usually beats a larger, emptier one, unless emptiness is the point.

The MDA framework

Robin Hunicke, Marc LeBlanc and Robert Zubek, "MDA: A Formal Approach to Game Design and Game Research" (2004), developed in the Game Design and Tuning Workshop at the Game Developers Conference.

The designer works mechanics → dynamics → aesthetics; the player experiences them the other way round. The paper's eight kinds of fun make a useful target list for a world:

Level design process

1. Brief

   Purpose of the level: what it teaches or tests, story beat, target duration, mechanics used, emotional aim (MDA aesthetics), where it sits on the interest curve.

2. Bubble diagram

   Spaces as bubbles, connections as lines: start, set pieces, optional areas, gates, keys, the exit. Check flow, loops and critical path before any geometry exists.

3. Paper map

   Top-down sketch with rough scale: landmarks, sightlines, cover, elevation, where the player first sees the goal.

4. Blockout (greybox)

   Build with simple untextured shapes in the engine at true scale. Test movement metrics (jump distance, cover height, door width) and timing. This is where most design happens.

5. Playtest and iterate

   Watch people play without helping. Note where they get lost, bored, stuck or skip content. Iterate the blockout; it is cheap to change now.

6. Art pass

   Dress the level: materials, lighting, props, environmental storytelling. Keep the navigation cues from the blockout intact; art that hides the path is a regression.

7. Polish and final test

   Audio, effects, performance, collision bugs, accessibility settings, a last round of fresh-eyes playtests.

Implementing in Godot

Pointers only; details are on the Godot sheets.

A minimal world-state autoload for faction reputation:

# world_state.gd (autoload as WorldState)
extends Node
 
signal reputation_changed(faction: StringName, value: int)
 
var flags: Dictionary = {}
var reputation: Dictionary = {
	&"wardens": 0,
	&"salt_guild": 0,
}
 
func change_rep(faction: StringName, delta: int) -> void:
	var v: int = clampi(reputation.get(faction, 0) + delta,
		-100, 100)
	reputation[faction] = v
	reputation_changed.emit(faction, v)
 
func set_flag(key: StringName, value := true) -> void:
	flags[key] = value

Playtesting the world

Signs of a navigation problem: players hugging walls, spinning the camera, opening the map repeatedly, walking into decorative dead ends, or asking "where am I supposed to go?".

Common mistakes

Templates

Level design document

LEVEL:                     WORLD POSITION: (hub/zone)
PURPOSE: teach / test / twist:
MECHANICS USED:            NEW MECHANIC INTRODUCED:
STORY BEAT:
TARGET AESTHETICS (MDA):
TARGET DURATION:           DIFFICULTY:
INTEREST CURVE: hook / peaks / rest / climax
CRITICAL PATH: start -> ... -> exit
OPTIONAL AREAS AND REWARDS:
GATES AND KEYS (gate seen before key? y/n):
LANDMARKS: global:        local:
NODES (decisions, NPCs, saves):
EDGES (how bounds are shown):
GUIDANCE: light / color / lines / sound / UI
ENVIRONMENTAL STORY VIGNETTES:
ENEMIES AND ENCOUNTERS:
METRICS: jump, cover height, door width
BUBBLE DIAGRAM: link
BLOCKOUT: link           PLAYTEST NOTES: link

Area / biome sheet

AREA:                      DISTRICT IDENTITY (one line):
CLIMATE AND BIOME (see physical world sheet):
PALETTE:                   MATERIALS:
MUSIC AND AMBIENT SOUND:
LANDMARKS VISIBLE FROM HERE:
ENTRY / EXIT POINTS:
TRAVERSAL: verbs needed, hazards, shortcuts
FACTION CONTROL:           REPUTATION EFFECTS:
ENEMIES / CREATURES (and why they live here):
RESOURCES / LOOT:
LORE: what happened here (hidden truth):
      what the player can find out (fragments):
POINTS OF INTEREST (and spacing in seconds):
FAST TRAVEL POINT: y/n, in-world form:

Quest template

QUEST:                     GIVER (faction, bias):
HOOK (why the player cares):
GOAL (stated):             REAL SITUATION (hidden):
STEPS:
  1.
  2.
  3.
LOCATIONS (existing areas reused?):
MECHANICS EXERCISED:
CHOICES AND CONSEQUENCES:
  option A -> world change:        reputation:
  option B -> world change:        reputation:
FAIL STATE:
REWARDS: items / reputation / lore / access
LORE DELIVERED (channel):
REACTIVITY (who mentions it later):
LUDONARRATIVE CHECK: do mechanics match the story?

References

• Ludonarrative dissonance (Wikipedia) (opens in a new tab): Clint Hocking's October 2007 Click Nothing post "Ludonarrative Dissonance in Bioshock" and later examples
• Kevin Lynch, The Image of the City (MIT Press, 1960): paths, edges, districts, nodes, landmarks; imageability
• The Image of the City (Wikipedia) (opens in a new tab): summary of the five elements
• Weenie (design) (Wikipedia) (opens in a new tab): Walt Disney's term, its origin and examples
• Don Carson, "Environmental Storytelling: Creating Immersive 3D Worlds Using Lessons Learned from the Theme Park Industry" (Gamasutra, 2000) (opens in a new tab): cause-and-effect vignettes, contrast, drawing the audience
• Henry Jenkins, "Game Design as Narrative Architecture" (2004) (opens in a new tab): evocative, enacted, embedded and emergent narrative
• Hunicke, LeBlanc and Zubek, "MDA: A Formal Approach to Game Design and Game Research" (2004) (opens in a new tab): mechanics, dynamics, aesthetics and the eight kinds of fun
• Jesse Schell, The Art of Game Design: A Book of Lenses (Morgan Kaufmann, 2008; 3rd ed. 2019): interest curves and design lenses
• Yellow paint in video games (Wikipedia) (opens in a new tab): the debate and its arguments
• Procedural generation (Wikipedia) (opens in a new tab): "procedural oatmeal" and Kate Compton
• Kate Compton, "So you want to build a generator" (opens in a new tab): practical guide to generators, source of the oatmeal image
• Perlin noise (Wikipedia) (opens in a new tab): origin (Tron, SIGGRAPH 1985) and simplex noise
• Maxim Gumin, WaveFunctionCollapse (GitHub) (opens in a new tab): the algorithm and games using it
• Dwarf Fortress (Wikipedia) (opens in a new tab): world generation, history simulation, Legends mode
• Godot docs: TileMapLayer (opens in a new tab): the tile layer node and TileSet features