diff --git a/Source/Ecsact/Ecsact.Build.cs b/Source/Ecsact/Ecsact.Build.cs
index fbe1f16..1a46ca9 100644
--- a/Source/Ecsact/Ecsact.Build.cs
+++ b/Source/Ecsact/Ecsact.Build.cs
@@ -29,7 +29,6 @@ public Ecsact(ReadOnlyTargetRules Target) : base(Target) {
 			"Engine",
 			"Slate",
 			"SlateCore",
-			"Kismet",
 		});
 
 		DynamicallyLoadedModuleNames.AddRange(new string[] {
diff --git a/Source/Ecsact/Public/EcsactUnreal/EcsactRunner.cpp b/Source/Ecsact/Public/EcsactUnreal/EcsactRunner.cpp
index 5eb1f9d..7af46b8 100644
--- a/Source/Ecsact/Public/EcsactUnreal/EcsactRunner.cpp
+++ b/Source/Ecsact/Public/EcsactUnreal/EcsactRunner.cpp
@@ -1,4 +1,5 @@
 #include "EcsactUnreal/EcsactRunner.h"
+#include "EcsactUnreal/EcsactRunnerSubsystem.h"
 
 auto UEcsactRunner::Tick(float DeltaTime) -> void {
 }
@@ -13,3 +14,9 @@ auto UEcsactRunner::GetStatId() const -> TStatId {
 auto UEcsactRunner::IsTickable() const -> bool {
 	return !IsTemplate();
 }
+
+auto UEcsactRunner::InitRunnerSubsystems() -> void {
+}
+
+auto UEcsactRunner::ShutdownRunnerSubsystems() -> void {
+}
diff --git a/Source/Ecsact/Public/EcsactUnreal/EcsactRunner.h b/Source/Ecsact/Public/EcsactUnreal/EcsactRunner.h
index 5f7e15d..4478833 100644
--- a/Source/Ecsact/Public/EcsactUnreal/EcsactRunner.h
+++ b/Source/Ecsact/Public/EcsactUnreal/EcsactRunner.h
@@ -11,6 +11,8 @@ UCLASS(Abstract)
 class UEcsactRunner : public UObject, public FTickableGameObject {
 	GENERATED_BODY() // NOLINT
 
+	TArray<class UEcsactRunnerSubsystem*> RunnerSubsystems;
+
 protected:
 	UPROPERTY()
 	class UEcsactUnrealEventsCollector* EventsCollector;
@@ -18,6 +20,9 @@ class UEcsactRunner : public UObject, public FTickableGameObject {
 	UPROPERTY()
 	class UEcsactUnrealExecutionOptions* ExecutionOptions;
 
+	virtual auto InitRunnerSubsystems() -> void;
+	virtual auto ShutdownRunnerSubsystems() -> void;
+
 public:
 	auto Tick(float DeltaTime) -> void override;
 	auto GetStatId() const -> TStatId override;
diff --git a/Source/Ecsact/Public/EcsactUnreal/EcsactRunnerSubsystem.cpp b/Source/Ecsact/Public/EcsactUnreal/EcsactRunnerSubsystem.cpp
new file mode 100644
index 0000000..8c39259
--- /dev/null
+++ b/Source/Ecsact/Public/EcsactUnreal/EcsactRunnerSubsystem.cpp
@@ -0,0 +1,11 @@
+#include "EcsactRunnerSubsystem.h"
+
+auto UEcsactRunnerSubsystem::RunnerStart_Implementation(
+	class UEcsactRunner* Runner
+) -> void {
+}
+
+auto UEcsactRunnerSubsystem::RunnerStop_Implementation(
+	class UEcsactRunner* Runner
+) -> void {
+}
diff --git a/Source/Ecsact/Public/EcsactUnreal/EcsactRunnerSubsystem.h b/Source/Ecsact/Public/EcsactUnreal/EcsactRunnerSubsystem.h
new file mode 100644
index 0000000..924a18d
--- /dev/null
+++ b/Source/Ecsact/Public/EcsactUnreal/EcsactRunnerSubsystem.h
@@ -0,0 +1,23 @@
+#pragma once
+
+#include "ecsact/runtime/common.h"
+#include "EcsactRunnerSubsystem.generated.h"
+
+UCLASS(Blueprintable)
+
+class ECSACT_API UEcsactRunnerSubsystem : public UObject {
+	GENERATED_BODY() // NOLINT
+public:
+	UFUNCTION(BlueprintNativeEvent, Category = "Ecsact Runner")
+	void RunnerStart(class UEcsactRunner* Runner);
+
+	UFUNCTION(BlueprintNativeEvent, Category = "Ecsact Runner")
+	void RunnerStop(class UEcsactRunner* Runner);
+
+	virtual auto RunnerStart_Implementation( //
+		class UEcsactRunner* Runner
+	) -> void;
+	virtual auto RunnerStop_Implementation( //
+		class UEcsactRunner* Runner
+	) -> void;
+};
diff --git a/Source/Ecsact/Public/EcsactUnreal/EcsactSettings.h b/Source/Ecsact/Public/EcsactUnreal/EcsactSettings.h
index 5d111c8..a24b5b7 100644
--- a/Source/Ecsact/Public/EcsactUnreal/EcsactSettings.h
+++ b/Source/Ecsact/Public/EcsactUnreal/EcsactSettings.h
@@ -55,4 +55,7 @@ class ECSACT_API UEcsactSettings : public UObject {
 		)
 	)
 	TSubclassOf<UEcsactRunner> CustomRunnerClass;
+
+	UPROPERTY(VisibleAnywhere, Config, Category = "Runtime")
+	TArray<TSubclassOf<class UEcsactRunnerSubsystem>> RunnerSubsystems;
 };
diff --git a/Source/EcsactUnrealCodegenPlugin/EcsactUnrealCodegenPlugin.cpp b/Source/EcsactUnrealCodegenPlugin/EcsactUnrealCodegenPlugin.cpp
index 3f8d9b2..a63ac4d 100644
--- a/Source/EcsactUnrealCodegenPlugin/EcsactUnrealCodegenPlugin.cpp
+++ b/Source/EcsactUnrealCodegenPlugin/EcsactUnrealCodegenPlugin.cpp
@@ -98,6 +98,7 @@ static auto generate_header(ecsact::codegen_plugin_context ctx) -> void {
 
 	inc_header(ctx, "CoreMinimal.h");
 	inc_header(ctx, "UObject/Interface.h");
+	inc_header(ctx, "EcsactUnreal/EcsactRunnerSubsystem.h");
 	inc_package_header(ctx, ctx.package_id, ".hh");
 	inc_package_header_no_ext(ctx, ctx.package_id, "__ecsact__ue.generated.h");
 
@@ -106,46 +107,73 @@ static auto generate_header(ecsact::codegen_plugin_context ctx) -> void {
 
 	ctx.writef("\n\n");
 
+	ctx.write(std::format(
+		"UCLASS(Blueprintable, meta = "
+		"(DisplayName = \"Ecsact Runner Package Subsystem ({})\"))\n",
+		ecsact::meta::package_name(ctx.package_id)
+	));
+	block(
+		ctx,
+		std::format(
+			"class U{}EcsactRunnerSubsystem : public UEcsactRunnerSubsystem",
+			prefix
+		),
+		[&] {
+			ctx.writef("GENERATED_BODY() // NOLINT\n");
+			ctx.indentation -= 1;
+			ctx.writef("\n");
+			ctx.writef("public:");
+			ctx.indentation += 1;
+			ctx.writef("\n");
+
+			for(auto comp_id : ecsact::meta::get_component_ids(ctx.package_id)) {
+				auto comp_full_name = ecsact::meta::decl_full_name(comp_id);
+				auto comp_type_cpp_name = cpp_identifier(comp_full_name);
+				auto comp_name = ecsact::meta::component_name(comp_id);
+				auto comp_pascal_name = ecsact_decl_name_to_pascal(comp_name);
+				ctx.write(std::format(
+					"UFUNCTION(BlueprintNativeEvent, Category = \"Ecsact Runner\", meta "
+					"= "
+					"(DisplayName = \"Init {}\"))\n",
+					comp_full_name
+				));
+				ctx.write(std::format("void Init{}();\n", comp_pascal_name));
+				ctx.write(std::format(
+					"virtual void Init{}_Implementation();\n",
+					comp_pascal_name
+				));
+			}
+		}
+	);
+	ctx.writef(";\n");
+}
+
+static auto generate_source(ecsact::codegen_plugin_context ctx) -> void {
+	inc_package_header_no_ext(ctx, ctx.package_id, "__ecsact__ue.h");
+
+	auto package_pascal_name =
+		ecsact_decl_name_to_pascal(ecsact::meta::package_name(ctx.package_id));
+
 	for(auto comp_id : ecsact::meta::get_component_ids(ctx.package_id)) {
+		auto comp_full_name = ecsact::meta::decl_full_name(comp_id);
 		auto comp_name = ecsact::meta::component_name(comp_id);
-		ctx.write(
-			"UINTERFACE(MinimalAPI, Blueprintable, meta = (DisplayName = \"",
-			std::format(
-				"requires {} (ecsact)",
-				ecsact::meta::decl_full_name(comp_id)
-			),
-			"\"))\n"
-		);
+		auto comp_pascal_name = ecsact_decl_name_to_pascal(comp_name);
+
 		block(
 			ctx,
 			std::format(
-				"class UEcsactRequires{}{} : public UInterface",
-				prefix,
-				comp_name
+				"void U{}EcsactRunnerSubsystem::Init{}_Implementation()",
+				package_pascal_name,
+				comp_pascal_name
 			),
-			[&] { ctx.writef("GENERATED_BODY() // NOLINT"); }
-		);
-		ctx.writef(";\n");
-
-		block(
-			ctx,
-			std::format("class IEcsactRequires{}{}", prefix, comp_name),
 			[&] {
-				ctx.writef("GENERATED_BODY() // NOLINT\n");
-				ctx.indentation -= 1;
-				ctx.writef("\n");
-				ctx.writef("public:");
-				ctx.indentation += 1;
-				ctx.writef("\n");
+
 			}
 		);
-		ctx.writef(";\n");
+		ctx.writef("\n\n");
 	}
 }
 
-static auto generate_source(ecsact::codegen_plugin_context ctx) -> void {
-}
-
 auto ecsact_codegen_plugin(
 	ecsact_package_id          package_id,
 	ecsact_codegen_write_fn_t  write_fn,