diff --git a/projects/1.21/assets/overpacked/overpacked/lang/en_us.json b/projects/1.21/assets/overpacked/overpacked/lang/en_us.json
new file mode 100644
index 000000000000..6613f4bcf213
--- /dev/null
+++ b/projects/1.21/assets/overpacked/overpacked/lang/en_us.json
@@ -0,0 +1,23 @@
+{
+  "overpacked": "Overpacked",
+
+  "item.overpacked.giant_backpack":"item.overpacked.giant_backpack",
+  "item.overpacked.white_giant_backpack":"item.overpacked.white_giant_backpack",
+  "item.overpacked.orange_giant_backpack":"item.overpacked.orange_giant_backpack",
+  "item.overpacked.magenta_giant_backpack":"item.overpacked.magenta_giant_backpack",
+  "item.overpacked.light_blue_giant_backpack":"item.overpacked.light_blue_giant_backpack",
+  "item.overpacked.yellow_giant_backpack":"item.overpacked.yellow_giant_backpack",
+  "item.overpacked.lime_giant_backpack":"item.overpacked.lime_giant_backpack",
+  "item.overpacked.pink_giant_backpack":"item.overpacked.pink_giant_backpack",
+  "item.overpacked.gray_giant_backpack":"item.overpacked.gray_giant_backpack",
+  "item.overpacked.light_gray_giant_backpack":"item.overpacked.light_gray_giant_backpack",
+  "item.overpacked.cyan_giant_backpack":"item.overpacked.cyan_giant_backpack",
+  "item.overpacked.purple_giant_backpack":"item.overpacked.purple_giant_backpack",
+  "item.overpacked.blue_giant_backpack":"item.overpacked.blue_giant_backpack",
+  "item.overpacked.brown_giant_backpack":"item.overpacked.brown_giant_backpack",
+  "item.overpacked.green_giant_backpack":"item.overpacked.green_giant_backpack",
+  "item.overpacked.red_giant_backpack":"item.overpacked.red_giant_backpack",
+  "item.overpacked.black_giant_backpack":"item.overpacked.black_giant_backpack",
+
+  "entity.overpacked.giant_backpack":"entity.overpacked.giant_backpack"
+}
\ No newline at end of file
diff --git a/projects/1.21/assets/overpacked/overpacked/lang/zh_cn.json b/projects/1.21/assets/overpacked/overpacked/lang/zh_cn.json
new file mode 100644
index 000000000000..b41e9017428f
--- /dev/null
+++ b/projects/1.21/assets/overpacked/overpacked/lang/zh_cn.json
@@ -0,0 +1,23 @@
+{
+  "overpacked": "Overpacked",
+
+  "item.overpacked.giant_backpack":"巨型背包",
+  "item.overpacked.white_giant_backpack":"白色巨型背包",
+  "item.overpacked.orange_giant_backpack":"橙色巨型背包",
+  "item.overpacked.magenta_giant_backpack":"品红色巨型背包",
+  "item.overpacked.light_blue_giant_backpack":"淡蓝色巨型背包",
+  "item.overpacked.yellow_giant_backpack":"黄色巨型背包",
+  "item.overpacked.lime_giant_backpack":"亮绿色巨型背包",
+  "item.overpacked.pink_giant_backpack":"粉红色巨型背包",
+  "item.overpacked.gray_giant_backpack":"灰色巨型背包",
+  "item.overpacked.light_gray_giant_backpack":"淡灰色巨型背包",
+  "item.overpacked.cyan_giant_backpack":"青色巨型背包",
+  "item.overpacked.purple_giant_backpack":"紫色巨型背包",
+  "item.overpacked.blue_giant_backpack":"蓝色巨型背包",
+  "item.overpacked.brown_giant_backpack":"棕色巨型背包",
+  "item.overpacked.green_giant_backpack":"绿色巨型背包",
+  "item.overpacked.red_giant_backpack":"红色巨型背包",
+  "item.overpacked.black_giant_backpack":"黑色巨型背包",
+
+  "entity.overpacked.giant_backpack":"巨型背包"
+}
\ No newline at end of file