diff --git a/src/Ecs/Components.ts b/src/Ecs/Components.ts
index f0a5a25..c0c0a14 100644
--- a/src/Ecs/Components.ts
+++ b/src/Ecs/Components.ts
@@ -1,6 +1,6 @@
 
-import { Data as CoreData, Store, SparseStore } from "./Data";
 import { Layer, SpriteSheet } from "../Applet/Render";
+import { copy, Data as CoreData, SparseStore, Store } from "./Data";
 
 export class Box {
     constructor(
@@ -72,4 +72,14 @@ export class Data extends CoreData {
     renderSprite: SparseStore<RenderSprite> = {};
     collisionSourceClass: SparseStore<CollisionClass> = {};
     collisionTargetClass: SparseStore<CollisionClass> = {};
+
+    constructor(source?: Partial<Data>) {
+        super(source);
+        if(source?.location) this.location = source.location.slice();
+        if(source?.bounds) this.bounds = source.bounds.slice();
+        if(source?.renderBounds) this.renderBounds = copy(source.renderBounds);
+        if(source?.renderSprite) this.renderSprite = copy(source.renderSprite);
+        if(source?.collisionSourceClass) this.collisionSourceClass = copy(source.collisionSourceClass);
+        if(source?.collisionTargetClass) this.collisionTargetClass = copy(source.collisionTargetClass);
+    }
 }
diff --git a/src/Ecs/Data.ts b/src/Ecs/Data.ts
index d076f46..8c2e156 100644
--- a/src/Ecs/Data.ts
+++ b/src/Ecs/Data.ts
@@ -19,6 +19,14 @@ export type Store<T> = (T & HasGeneration)[];
 export type SparseStore<T> = Record<number, T & HasGeneration>;
 export class Data {
     entity: Store<EntityState> = [];
+
+    constructor(source?: Partial<Data>) {
+        if(source?.entity) this.entity = source.entity.slice();
+    }
+}
+
+export function copy<T>(source: SparseStore<T>): SparseStore<T> {
+    return JSON.parse(JSON.stringify(source));
 }
 
 // Ergonomic Lookup typings
diff --git a/src/Game/GameComponents.ts b/src/Game/GameComponents.ts
index 2811c5b..724ecce 100644
--- a/src/Game/GameComponents.ts
+++ b/src/Game/GameComponents.ts
@@ -59,6 +59,15 @@ export class Data extends EcsData {
     hp: SparseStore<Hp> = {};
     lifetime: SparseStore<Lifetime> = {};
     message: SparseStore<Message> = {};
+
+    constructor(source?: Partial<Data>) {
+        super(source);
+        if(source?.boss) this.boss = copy(source.boss);
+        if(source?.bullet) this.bullet = copy(source.bullet);
+        if(source?.hp) this.hp = copy(source.hp);
+        if(source?.lifetime) this.lifetime = copy(source.lifetime);
+        if(source?.message) this.message = copy(source.message);
+    }
 }
 
 export enum Teams {