diff --git a/packages/ecs/lib/libecs.d.ts b/packages/ecs/lib/libecs.d.ts
index 3186f04f..f8c646d4 100644
--- a/packages/ecs/lib/libecs.d.ts
+++ b/packages/ecs/lib/libecs.d.ts
@@ -1,4 +1,17 @@
 // TypeScript bindings for emscripten-generated code.  Automatically generated at compile time.
+declare namespace RuntimeExports {
+    let HEAPF32: any;
+    let HEAPF64: any;
+    let HEAP_DATA_VIEW: any;
+    let HEAP8: any;
+    let HEAPU8: any;
+    let HEAP16: any;
+    let HEAPU16: any;
+    let HEAP32: any;
+    let HEAPU32: any;
+    let HEAP64: any;
+    let HEAPU64: any;
+}
 interface WasmModule {
 }
 
@@ -7,8 +20,6 @@ export interface ClassHandle {
   delete(): void;
   deleteLater(): this;
   isDeleted(): boolean;
-  // @ts-ignore - If targeting lower than ESNext, this symbol might not exist.
-  [Symbol.dispose](): void;
   clone(): this;
 }
 export interface container extends ClassHandle {
@@ -47,8 +58,7 @@ export interface Registry extends ClassHandle {
   killEntity(_0: Entity): void;
   clearEntities(): void;
   removeComponent(_0: Entity, _1: {name: string, [key: string]: any}): void;
-  addSystem(_0: (registry: Registry) => void): void;
-  runSystems(): void;
+  addSystem(_0: (registry: Registry, ctx: any) => void): void;
   clearSystems(): void;
   entityFromIndex(_0: number): Entity;
   removeSystem(_0: number): void;
@@ -56,6 +66,7 @@ export interface Registry extends ClassHandle {
   getEntityComponentConst(_0: Entity, _1: {name: string, [key: string]: any}): any | undefined;
   getEntityComponent(_0: Entity, _1: {name: string, [key: string]: any}): any | undefined;
   addComponent(_0: Entity, _1: {name: string, [key: string]: any}): any | undefined;
+  runSystems(_0: any): void;
   getZipper(_0: any): any;
 }
 
@@ -74,5 +85,5 @@ interface EmbindModule {
   };
 }
 
-export type MainModule = WasmModule & EmbindModule;
+export type MainModule = WasmModule & typeof RuntimeExports & EmbindModule;
 export default function MainModuleFactory (options?: unknown): Promise<MainModule>;
diff --git a/packages/ecs/src/ecs-library.ts b/packages/ecs/src/ecs-library.ts
index 793a3e22..db735eee 100644
--- a/packages/ecs/src/ecs-library.ts
+++ b/packages/ecs/src/ecs-library.ts
@@ -8,6 +8,7 @@ import {
 
 import type { Entity, MainModule, Registry, SparseArray } from "../lib";
 import { Module } from "../lib";
+import { type ECSContext } from "./ecs-context.type";
 
 export type Component = { name: string; [key: string]: any };
 export type System = (registry: Registry) => void;
@@ -36,8 +37,8 @@ export class ECSLibrary extends BaseComponentSystemLibrary {
     this.registry = new this.module.Registry();
   }
 
-  async run(): Promise<void> {
-    this.runSystems();
+  async run(ctx: ECSContext): Promise<void> {
+    this.runSystems(ctx);
   }
 
   addComponent(entity: Entity, component: Component): void {
@@ -68,8 +69,8 @@ export class ECSLibrary extends BaseComponentSystemLibrary {
     this.registry.clearEntities();
   }
 
-  runSystems(): void {
-    this.registry.runSystems();
+  runSystems(ctx: ECSContext): void {
+    this.registry.runSystems(ctx);
   }
 
   clearSystems(): void {
diff --git a/packages/ecs/test/wasm/Registry.spec.ts b/packages/ecs/test/wasm/Registry.spec.ts
index a5edffaa..2e8b9fb1 100644
--- a/packages/ecs/test/wasm/Registry.spec.ts
+++ b/packages/ecs/test/wasm/Registry.spec.ts
@@ -114,7 +114,7 @@ describe("Registry", () => {
 
     for (let i = 0; i <= 15; i++) {
       expect(counter).toBe(i);
-      r.runSystems();
+      r.runSystems(null);
     }
     expect(counter).toBe(16);
   });
@@ -154,12 +154,12 @@ describe("Registry", () => {
     expect(r.getComponents(Position).get(e.getId())).toStrictEqual(new Position(-2, -2));
     expect(r.getComponents(Position).get(e2.getId())).toStrictEqual(new Position(2, 2));
     expect(r.getComponents(Position).get(e3.getId())).toStrictEqual(new Position(0, 0));
-    r.runSystems();
+    r.runSystems(null);
 
     expect(r.getComponents(Position).get(e.getId())).toStrictEqual(new Position(-1, -1));
     expect(r.getComponents(Position).get(e2.getId())).toStrictEqual(new Position(1, 1));
     expect(r.getComponents(Position).get(e3.getId())).toStrictEqual(new Position(0, 0));
-    r.runSystems();
+    r.runSystems(null);
 
     expect(r.getComponents(Position).get(e.getId())).toStrictEqual(new Position(0, 0));
     expect(r.getComponents(Position).get(e2.getId())).toStrictEqual(new Position(0, 0));
diff --git a/packages/ecs/wasm/Registry.cpp b/packages/ecs/wasm/Registry.cpp
index 25f14a18..87f2dbd7 100644
--- a/packages/ecs/wasm/Registry.cpp
+++ b/packages/ecs/wasm/Registry.cpp
@@ -23,7 +23,7 @@ namespace nfo {
     EMSCRIPTEN_BINDINGS(Registry)
     {
         emscripten::register_type<Component>("{name: string, [key: string]: any}");
-        emscripten::register_type<System>("(registry: Registry) => void");
+        emscripten::register_type<System>("(registry: Registry, ctx: any) => void");
 
         emscripten::class_<Registry>("Registry")
             .constructor()
diff --git a/packages/ecs/wasm/Registry.hpp b/packages/ecs/wasm/Registry.hpp
index d0253021..e3f45cda 100644
--- a/packages/ecs/wasm/Registry.hpp
+++ b/packages/ecs/wasm/Registry.hpp
@@ -159,11 +159,11 @@ namespace nfo {
             _systems.clear();
         }
 
-        void run_systems()
+        void run_systems(const emscripten::val &ctx)
         {
-            std::vector<std::function<void(Registry &)>> systems_copy = _systems;
-            for (std::function<void(Registry &)> &system : systems_copy)
-                system(*this);
+            std::vector<std::function<void(Registry &, const emscripten::val &)>> systems_copy = _systems;
+            for (std::function<void(Registry &, const emscripten::val &)> &system : systems_copy)
+                system(*this, ctx);
         }
 
         void log(const Entity &entity) const
@@ -214,7 +214,7 @@ namespace nfo {
 
         std::unordered_map<std::string, std::function<void(Registry &, Entity const &)>> _remove_functions;
         std::unordered_map<std::string, std::function<bool(const Registry &, const Entity &)>> _loggers;
-        std::vector<std::function<void(Registry &)>> _systems;
+        std::vector<std::function<void(Registry &, const emscripten::val &)>> _systems;
 
         std::vector<Entity> _dead_entities;
         std::size_t _next_entity{0};