diff --git a/link.md b/link.md
index b9fbe1a..b67e94c 100644
--- a/link.md
+++ b/link.md
@@ -93,6 +93,7 @@ latest : ue 5.5.1
 - rig: https://www.fab.com/ja/listings/d3f8d256-d8d9-4d27-91c1-c61e55e984a6
 - flying: https://www.fab.com/ja/listings/73c7b308-ef84-4ad7-95fd-190fe84c06b0
 - ai: https://ludusengine.com/
+- gravity: https://www.fab.com/listings/9230afd2-c327-4a78-bed6-c68a3b965076
 
 ## character