diff --git a/assets/compat.ini b/assets/compat.ini
index 73a4ee05c0fc..67610416eb08 100644
--- a/assets/compat.ini
+++ b/assets/compat.ini
@@ -974,3 +974,11 @@ UCJS10007 = true
 UCES00001 = true
 UCKS45008 = true
 NPJG00059 = true
+
+# Metal Slug XX (See issue #13916)
+ULUS10495 = true
+ULJS00246 = true
+ULAS42199 = true
+ULKS46221 = true
+NPEH00118 = true
+NPJH50044 = true