diff --git a/engine/include/nb_thread.h b/engine/include/nb_thread.h
index 47a0c95..b69b462 100644
--- a/engine/include/nb_thread.h
+++ b/engine/include/nb_thread.h
@@ -11,4 +11,6 @@
 
 /* Standard */
 
+nb_thread_t* nb_create_thread(void (*func)(void*), void* userdata);
+
 #endif
diff --git a/engine/include/nb_type/thread.h b/engine/include/nb_type/thread.h
index 37e90fe..87a1305 100644
--- a/engine/include/nb_type/thread.h
+++ b/engine/include/nb_type/thread.h
@@ -6,15 +6,35 @@
 
 #ifdef NB_EXPOSE_THREAD
 /* External library */
+#if defined(THREAD_POSIX)
+#include <pthread.h>
+#elif defined(THREAD_WIN32)
+#include <windows.h>
+#endif
 
 /* NishBox */
 
 /* Standard */
 
-NB_DECLARE_TYPE(thread, {
+NB_DECLARE_TYPE(thread_context, {
+	void (*func)(void*);
+	void* data;
 });
+
+#if defined(THREAD_POSIX)
+NB_DECLARE_TYPE(thread, {
+	nb_thread_context_t context;
+	pthread_t	    thread;
+});
+#elif defined(THREAD_WIN32)
+NB_DECLARE_TYPE(thread, {
+	nb_thread_context_t context;
+	HANDLE		    thread;
+});
+#endif
 #else
 typedef void nb_thread_t;
+typedef void nb_thread_context_t;
 #endif
 
 #endif
diff --git a/engine/thread/POSIX/nb_thread.c b/engine/thread/POSIX/nb_thread.c
index 17e5dfb..62d27ce 100644
--- a/engine/thread/POSIX/nb_thread.c
+++ b/engine/thread/POSIX/nb_thread.c
@@ -3,6 +3,7 @@
 #include <nb_pre.h>
 
 /* External library */
+#include <pthread.h>
 
 /* Interface */
 #include <nb_thread.h>
@@ -10,3 +11,19 @@
 /* NishBox */
 
 /* Standard */
+#include <stdlib.h>
+
+void* nb_wrap_thread(void* arg) {
+	nb_thread_context_t* ctx = (nb_thread_context_t*)arg;
+	ctx->func(ctx->data);
+	return NULL;
+}
+
+nb_thread_t* nb_create_thread(void (*func)(void*), void* userdata) {
+	nb_thread_t* thread  = malloc(sizeof(*thread));
+	thread->context.func = func;
+	thread->context.data = userdata;
+	if(pthread_create(&thread->thread, NULL, nb_wrap_thread, &thread->context) == 0) return thread;
+	free(thread);
+	return NULL;
+}
diff --git a/engine/thread/WIN32/nb_thread.c b/engine/thread/WIN32/nb_thread.c
index 17e5dfb..754471c 100644
--- a/engine/thread/WIN32/nb_thread.c
+++ b/engine/thread/WIN32/nb_thread.c
@@ -3,6 +3,7 @@
 #include <nb_pre.h>
 
 /* External library */
+#include <windows.h>
 
 /* Interface */
 #include <nb_thread.h>
@@ -10,3 +11,21 @@
 /* NishBox */
 
 /* Standard */
+#include <stdlib.h>
+
+DWORD WINAPI nb_wrap_thread(void* arg) {
+	nb_thread_context_t* ctx = (nb_thread_context_t*)arg;
+	ctx->func(ctx->data);
+	return 0;
+}
+
+nb_thread_t* nb_create_thread(void (*func)(void*), void* userdata) {
+	nb_thread_t* thread  = malloc(sizeof(*thread));
+	thread->context.func = func;
+	thread->context.data = userdata;
+	if((thread->thread = CreateThread(NULL, 0, nb_wrap_thread, &thread->context, 0, NULL)) != NULL) return thread;
+	/* XXX: Is this needed? */
+	ResumeThread(thread->thread);
+	free(thread);
+	return NULL;
+}
diff --git a/tool/format.sh b/tool/format.sh
new file mode 100755
index 0000000..7334c65
--- /dev/null
+++ b/tool/format.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec clang-format --verbose -i `find engine src -name "*.c" -or -name "*.h"`