encounter-design

What this skill does

# Encounter Design

**Purpose:** Tools for designing how players experience space and adversaries. An encounter is not a stat block dropped into a room — it is the intersection of spatial geometry, enemy behavior, and player resources that produces a tactical experience. This skill covers the full chain from world structure down to individual enemy placement.

**Core insight:** The same enemies in a different space feel completely different. The same space with different resources creates different strategies. Encounter design is combinatorial — small changes to any axis reshape the entire experience.

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## When to Activate

Use this skill when:
- Designing combat encounters, arenas, or enemy placement
- Building enemy AI or defining enemy behavior patterns
- Planning level layouts, room flow, or world structure
- Designing boss fights or multi-phase encounters
- Creating environmental puzzles or hazard-based challenges
- Encounters feel repetitive, samey, or tactically flat
- Players report encounters feel unfair or unreadable
- Deciding how to guide players through space without explicit markers
- Designing the macro structure of a game world (linear, hub, open)

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## Core Framework: The Encounter Triangle

Every encounter is shaped by three forces. The experience emerges from their intersection, not from any single axis.

```
           Space
       (WHERE it happens)
          /        \
         /          \
        /   encounter \
       /   experience  \
      /                 \
Adversaries ———————— Resources
(WHO they face)      (WHAT they have)
```

| Axis | What It Controls | Design Levers |
|------|-----------------|---------------|
| **Space** | Geometry, cover, elevation, sight lines, movement options | Room shape, verticality, choke points, flanking routes, hazards |
| **Adversaries** | Enemy types, behaviors, group composition, timing | Archetypes, AI complexity, wave structure, spawn placement |
| **Resources** | Health, ammo, abilities, environmental tools, information | Scarcity, placement, risk/reward of acquisition |

**The combination is the design.** Changing one axis changes the experience:

| Same Enemies, Different Space | Same Space, Different Resources |
|------------------------------|--------------------------------|
| Open arena → skill-based dodging | Full ammo → aggressive push |
| Tight corridor → claustrophobic pressure | Scarce ammo → cautious resource management |
| Elevated platforms → vertical tactics | New ability just unlocked → mastery testing |
| Multiple entrances → flanking anxiety | Environmental tools available → creative solutions |

**Diagnostic:** When an encounter feels wrong, identify which axis is underdesigned. Most "boring" encounters have interesting enemies in uninteresting space, or interesting space with no resource tension.

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## Combat Space Composition

Space is not a container for combat — it is a participant. Every spatial element shapes player behavior.

### Space Elements

| Element | Behavior It Creates | Design Consideration |
|---------|--------------------|--------------------|
| **Cover** | Approach decisions, safety management | Must be destructible or flanakable to prevent camping |
| **Sight lines** | Long = ranged advantage; short = close-quarters tension | Mix lengths to reward weapon/ability switching |
| **Elevation** | High ground advantage, verticality adds decision layers | Ensure both high and low positions have trade-offs |
| **Choke points** | Force commitment, create risk/reward | Powerful but can feel unfair if enemies use them without counter |
| **Flanking routes** | Reward spatial awareness, punish tunnel vision | Must be readable — players need to know routes exist |
| **Environmental hazards** | Add urgency, create area denial | Should be readable before they activate; punish carelessness, not ignorance |
| **Interactables** | Creative problem-solving, environmental mastery | Explosive barrels, bridges, switches — reward observation |

### Space Vocabulary

Different room shapes produce fundamentally different encounters:

| Space Type | Geometry | Behavior It Encourages | Best For |
|-----------|----------|----------------------|----------|
| **Arena** | Open, symmetric, few obstacles | Skill-based movement, dodging, spacing | Boss fights, duels, skill tests |
| **Corridor** | Long and narrow, limited lateral movement | Funneled intensity, resource attrition | Building tension, gauntlets |
| **Hub** | Central area with multiple exits/entrances | Multi-directional awareness, choice of engagement | Exploration pivots, ambush setups |
| **Gauntlet** | Linear with sequential challenges | Sustained pressure, endurance testing | Climactic sequences, escape scenes |
| **Balcony** | Split-level with overlook positions | Ranged/melee asymmetry, vertical tactics | Mixed-range encounters |
| **Labyrinth** | Interconnected paths, limited visibility | Paranoia, ambush potential, navigation challenge | Horror, stealth, cat-and-mouse |
| **Killzone** | Inescapable area with escalating threat | Survival pressure, crowd management | Wave defense, holdout scenarios |

**Design rule:** Vary space types across a level. Three arenas in a row feel repetitive regardless of enemy variation. Alternate space vocabulary to keep encounters feeling fresh.

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## Enemy Design as System

Enemies are behavior systems, not stat blocks. A slow enemy that blocks a doorway is more interesting than a fast enemy with more HP, because the first one changes what the player *does*.

### Enemy Archetypes

| Archetype | Role | Player Response It Forces |
|-----------|------|--------------------------|
| **Aggressor** | Closes distance, applies pressure | Reactive play, retreat decisions, priority targeting |
| **Defender** | Holds position, blocks progress | Approach planning, finding weak points, patience |
| **Supporter** | Buffs or heals other enemies | Target prioritization, "kill the healer" decisions |
| **Disruptor** | Breaks player patterns, denies abilities | Adaptation under pressure, fallback strategies |
| **Artillery** | Ranged area denial, long-range threat | Positioning awareness, closing distance under fire |
| **Swarm** | Overwhelms with individually-weak numbers | Crowd management, area-of-effect decisions |
| **Elite/Boss** | Multi-phase, tests multiple skills | Full mastery demonstration, pattern recognition |

### Composition Rules

Encounters become interesting through archetype *combinations*, not individual enemies:

- **Aggressor + Artillery** = the player is forced to close distance (artillery threat) while managing melee pressure (aggressor). Classic push-pull.
- **Defender + Supporter** = the player must find a way past the defender to reach the supporter, or the encounter becomes attrition.
- **Swarm + Disruptor** = the player's crowd-clearing tools get disrupted, forcing improvisation.

**Minimum viable encounter:** Two archetypes that create a tension the player must resolve. A single archetype is a puzzle with one answer; two archetypes create a dilemma.

### Enemy Readability

Players must identify enemy type and predict behavior from visual design alone.

- [ ] Silhouette is distinct from other enemy types at gameplay distance
- [ ] Color/material signals threat level or behavior type
- [ ] Animations telegraph attacks before they resolve
- [ ] Audio cues differentiate enemy types (especially off-screen)
- [ ] New enemy types are introduced in low-pressure situations before appearing in difficult encounters

**Design rule:** If the player dies to an enemy they couldn't read, that is a design failure, not a skill failure.

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## Behavior Design Patterns

Enemy AI architecture determines what behaviors are possible. Choose the simplest architecture that supports the design intent.

| Architecture | Behavior Quality | Design Control | Best For |
|-------------|-----------------|----------------|----------|
| **State Machine** | Predictable, readable | High