diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..2c31880
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "test/data/worlds"]
+	path = test/data/worlds
+	url = git://github.com/overviewer/Overviewer-Test-Data.git
diff --git a/test/data/worlds b/test/data/worlds
new file mode 160000
index 0000000..f1475f4
--- /dev/null
+++ b/test/data/worlds
@@ -0,0 +1 @@
+Subproject commit f1475f42c35bae5ae4b8cb9d890c903ba5c6be2e