diff --git a/src/character-creation.spec.ts b/src/character-creation.spec.ts
index bb1c118..765be64 100644
--- a/src/character-creation.spec.ts
+++ b/src/character-creation.spec.ts
@@ -1,6 +1,6 @@
 import fc from 'fast-check';
 import { describe, it } from 'vitest';
-import { Character } from './Character.ts';
+import { Character } from './characters/Character.ts';
 import { Level } from './value-objects/Level.ts';
 
 describe('CharacterCreation', () => {
diff --git a/src/Character.ts b/src/characters/Character.ts
similarity index 93%
rename from src/Character.ts
rename to src/characters/Character.ts
index b7c81a2..f814531 100644
--- a/src/Character.ts
+++ b/src/characters/Character.ts
@@ -4,14 +4,14 @@
  * "I can't believe it's not Haskell": invariants at boundaries.
  * State is encapsulated in a CharacterState record type.
  */
-import { Health } from './value-objects/Health.ts';
-import { Level } from './value-objects/Level.ts';
-import type { Status } from './value-objects/Status.ts';
-import { StatusAlive, StatusDead } from './value-objects/Status.ts';
-import type { CharacterState } from './characters/CharacterState.ts';
-import type { Faction } from './factions/Faction.ts';
-import type { DamageDealer } from './magical-objects/magical-object-types.ts';
-import type { Healer } from './magical-objects/magical-object-types.ts';
+import { Health } from '../value-objects/Health.ts';
+import { Level } from '../value-objects/Level.ts';
+import type { Status } from '../value-objects/Status.ts';
+import { StatusAlive, StatusDead } from '../value-objects/Status.ts';
+import type { CharacterState } from './CharacterState.ts';
+import type { Faction } from '../factions/Faction.ts';
+import type { DamageDealer } from '../magical-objects/magical-object-types.ts';
+import type { Healer } from '../magical-objects/magical-object-types.ts';
 
 export interface CharacterCtor {
   name: string;
diff --git a/src/damage-and-health.spec.ts b/src/damage-and-health.spec.ts
index 8210d3f..b86c6c5 100644
--- a/src/damage-and-health.spec.ts
+++ b/src/damage-and-health.spec.ts
@@ -1,6 +1,6 @@
 import fc from 'fast-check';
 import { describe, it } from 'vitest';
-import { Character } from './Character.ts';
+import { Character } from './characters/Character.ts';
 import { Level } from './value-objects/Level.ts';
 
 describe('DamageAndHealth', () => {
diff --git a/src/factions.spec.ts b/src/factions.spec.ts
index 0085bf0..aa0c669 100644
--- a/src/factions.spec.ts
+++ b/src/factions.spec.ts
@@ -1,6 +1,6 @@
 import fc from 'fast-check';
 import { describe, it } from 'vitest';
-import { Character } from './Character.ts';
+import { Character } from './characters/Character.ts';
 import { Faction } from './factions/Faction.ts';
 import { Level } from './value-objects/Level.ts';
 
diff --git a/src/healing.spec.ts b/src/healing.spec.ts
index 9761a77..360aada 100644
--- a/src/healing.spec.ts
+++ b/src/healing.spec.ts
@@ -1,6 +1,6 @@
 import fc from 'fast-check';
 import { describe, it } from 'vitest';
-import { Character } from './Character.ts';
+import { Character } from './characters/Character.ts';
 import { Level } from './value-objects/Level.ts';
 
 describe('Healing', () => {
diff --git a/src/levels.spec.ts b/src/levels.spec.ts
index ded8b0f..d4c5dc9 100644
--- a/src/levels.spec.ts
+++ b/src/levels.spec.ts
@@ -1,6 +1,6 @@
 import fc from 'fast-check';
 import { describe, it } from 'vitest';
-import { Character } from './Character.ts';
+import { Character } from './characters/Character.ts';
 import { Level } from './value-objects/Level.ts';
 
 describe('Levels', () => {
diff --git a/src/magical-objects.spec.ts b/src/magical-objects.spec.ts
index 02dd90b..0186c49 100644
--- a/src/magical-objects.spec.ts
+++ b/src/magical-objects.spec.ts
@@ -1,9 +1,9 @@
 import fc from 'fast-check';
 import { describe, it } from 'vitest';
-import { Character } from './Character.ts';
+import { Character } from './characters/Character.ts';
 import { Level } from './value-objects/Level.ts';
-import { MagicalWeapon } from './MagicalWeapon.ts';
-import { HealingObject } from './HealingObject.ts';
+import { MagicalWeapon } from './magical-objects/MagicalWeapon.ts';
+import { HealingObject } from './magical-objects/HealingObject.ts';
 
 describe('Magical Objects', () => {
   describe('WeaponDealsDamage', () => {
diff --git a/src/HealingObject.ts b/src/magical-objects/HealingObject.ts
similarity index 93%
rename from src/HealingObject.ts
rename to src/magical-objects/HealingObject.ts
index 4567326..1eccb80 100644
--- a/src/HealingObject.ts
+++ b/src/magical-objects/HealingObject.ts
@@ -6,10 +6,10 @@
  * - CurrentHealth never exceeds maxHealth
  */
 
-import { Character } from './Character.ts';
-import { Level } from './value-objects/Level.ts';
+import { Character } from '../characters/Character.ts';
+import { Level } from '../value-objects/Level.ts';
 import { MagicalObject } from './MagicalObject.ts';
-import type { Healer } from './magical-objects/magical-object-types.ts';
+import type { Healer } from './magical-object-types.ts';
 
 export class HealingObject extends MagicalObject implements Healer {
   private constructor(
diff --git a/src/MagicalObject.ts b/src/magical-objects/MagicalObject.ts
similarity index 100%
rename from src/MagicalObject.ts
rename to src/magical-objects/MagicalObject.ts
diff --git a/src/MagicalWeapon.ts b/src/magical-objects/MagicalWeapon.ts
similarity index 94%
rename from src/MagicalWeapon.ts
rename to src/magical-objects/MagicalWeapon.ts
index db87244..8b76dde 100644
--- a/src/MagicalWeapon.ts
+++ b/src/magical-objects/MagicalWeapon.ts
@@ -5,9 +5,9 @@
  * Invariants enforced at construction:
  * - Damage is non-negative
  */
-import { Character } from './Character.ts';
+import { Character } from '../characters/Character.ts';
 import { MagicalObject } from './MagicalObject.ts';
-import type { DamageDealer } from './magical-objects/magical-object-types.ts';
+import type { DamageDealer } from './magical-object-types.ts';
 
 export class MagicalWeapon extends MagicalObject implements DamageDealer {
   readonly #damage: number;
diff --git a/src/magical-objects/magical-object-types.ts b/src/magical-objects/magical-object-types.ts
index e41e01f..a83a94f 100644
--- a/src/magical-objects/magical-object-types.ts
+++ b/src/magical-objects/magical-object-types.ts
@@ -5,8 +5,8 @@
  * These interfaces describe magical objects from Character's point of view,
  * so Character can depend on abstractions rather than concrete classes.
  */
-import type { Character } from '../Character.ts';
-import type { MagicalObjectStatus } from '../MagicalObject.ts';
+import type { Character } from '../characters/Character.ts';
+import type { MagicalObjectStatus } from './MagicalObject.ts';
 
 /** A magical object that deals damage — from Character's point of view */
 export interface DamageDealer {