diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..9d03b02
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "world-tiles"]
+	path = world-tiles
+	url = https://git.cccv.de/rc3/world-tiles.git
diff --git a/world-tiles b/world-tiles
new file mode 160000
index 0000000..211f78a
--- /dev/null
+++ b/world-tiles
@@ -0,0 +1 @@
+Subproject commit 211f78a3d76439ca8a66b6a1abaa89502bc328ea