diff --git a/source/engine/billboard.h b/source/engine/billboard.h
deleted file mode 100644
index bd39495..0000000
--- a/source/engine/billboard.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#ifndef BILLBOARD_H
-#define BILLBOARD_H
-
-#endif
diff --git a/source/engine/component.h b/source/engine/component.h
deleted file mode 100644
index 6f70f09..0000000
--- a/source/engine/component.h
+++ /dev/null
@@ -1 +0,0 @@
-#pragma once
diff --git a/source/engine/gizmo.c b/source/engine/gizmo.c
deleted file mode 100644
index d53fab4..0000000
--- a/source/engine/gizmo.c
+++ /dev/null
@@ -1 +0,0 @@
-#include "gizmo.h"
diff --git a/source/engine/gizmo.h b/source/engine/gizmo.h
deleted file mode 100644
index cee2607..0000000
--- a/source/engine/gizmo.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef GIZMO_H
-#define GIZMO_H
-
-#include <stdint.h>
-
-struct gizmo {
-    uint8_t color[3];
-};
-
-#endif
diff --git a/source/engine/render.c b/source/engine/render.c
deleted file mode 100644
index e69de29..0000000