diff --git a/server-rs/crates/api-server/src/modules/game_distribution_publish.rs b/server-rs/crates/api-server/src/modules/game_distribution_publish.rs
index 1dbd1a5e6..0cf7d2202 100644
--- a/server-rs/crates/api-server/src/modules/game_distribution_publish.rs
+++ b/server-rs/crates/api-server/src/modules/game_distribution_publish.rs
@@ -131,6 +131,9 @@ async fn publish_version_core(
     let payload: NewGameVersionRequest =
         serde_json::from_value(metadata).map_err(|_| bad_request("metadata 字段不合法"))?;
     let project_key = normalize_project_key(payload.project_key.as_deref())?;
+    // `projectKey` 只是**创建作品**的身份锚：`POST /games` 无路径槽时用它派生 `gameId` 并落作品行；
+    // 追加版本走路径 `{game_id}`，既不回退到（owner, projectKey）找作品，也不把 key 写进版本行。
+    let is_create_path = matches!(&target, PublishTarget::NewGame);
     let requested_version_number = match &target {
         PublishTarget::NewGame => 1,
         PublishTarget::ExistingVersion { version_number, .. } => *version_number,
@@ -225,7 +228,13 @@ async fn publish_version_core(
     let input = GameDistributionPublishVersionRecordInput {
         game_id: game_id.clone(),
         owner_user_id,
-        project_key: project_key.clone(),
+        // 只有创建作品那一次把 `projectKey` 落进作品行（模块 get-or-create 用）；追加版本一律 None，
+        // 避免版本行的 `project_key` 与作品行、自然键三方各说各话。
+        project_key: if is_create_path {
+            project_key.clone()
+        } else {
+            None
+        },
         version_id,
         version_number,
         metadata_json,