diff --git a/components/canvas/nodes/World3DNode.tsx b/components/canvas/nodes/World3DNode.tsx
index d21bee3cc..ecee79eb5 100644
--- a/components/canvas/nodes/World3DNode.tsx
+++ b/components/canvas/nodes/World3DNode.tsx
@@ -65,7 +65,6 @@ const VIEW_META: Array<{
   icon: LucideIcon;
   toolbarKey: CanvasToolbarItemKey;
 }> = [
-  { id: "splat", label: "W", icon: Sparkles, toolbarKey: "world3dViewSplat" },
   { id: "image", label: "I", icon: ImageIcon, toolbarKey: "world3dViewImage" },
   { id: "mesh", label: "M", icon: Box, toolbarKey: "world3dViewMesh" },
 ];
@@ -77,18 +76,27 @@ const WORLD_GENERATION_RECOVERY_MAX_ATTEMPTS = 360;
 
 function resolveAvailableViews(data: World3DNodeData) {
   const views: World3DViewMode[] = [];
-  if (isArchivedWorldLabsAssetUrl(data.splatUrl)) views.push("splat");
   if (data.imageUrl || data.previewImage) views.push("image");
   if (isArchivedWorldLabsAssetUrl(data.meshUrl)) views.push("mesh");
+  if (views.length === 0 && isArchivedWorldLabsAssetUrl(data.splatUrl)) {
+    views.push("splat");
+  }
   return views;
 }
 
 function resolveActiveView(data: World3DNodeData) {
   const availableViews = resolveAvailableViews(data);
-  if (data.activeView && availableViews.includes(data.activeView)) {
+  if (
+    data.activeView &&
+    data.activeView !== "splat" &&
+    availableViews.includes(data.activeView)
+  ) {
     return data.activeView;
   }
-  return availableViews[0] || "splat";
+  if (availableViews.includes("mesh")) {
+    return "mesh";
+  }
+  return availableViews[0] || "image";
 }
 
 function inferDownloadTarget(data: World3DNodeData, activeView: World3DViewMode) {
@@ -153,6 +161,11 @@ function clampNumber(value: number, min: number, max: number) {
   return Math.min(max, Math.max(min, value));
 }
 
+function readFiniteNumber(value: unknown) {
+  const numberValue = Number(value);
+  return Number.isFinite(numberValue) ? numberValue : null;
+}
+
 export function World3DNode({
   node,
   isSelected,
@@ -165,6 +178,7 @@ export function World3DNode({
     null
   );
   const [isCapturingSnapshot, setIsCapturingSnapshot] = useState(false);
+  const [generationTick, setGenerationTick] = useState(0);
   const hydrationAttemptRef = useRef(0);
   const hydrationTaskRef = useRef<string | null>(null);
   const generationRecoveryAttemptRef = useRef(0);
@@ -286,6 +300,33 @@ export function World3DNode({
     }),
     [placeholderViewportScale]
   );
+  const displayedGenerationProgress = useMemo(() => {
+    if (data.status !== "generating") return 100;
+
+    const explicitProgress = readFiniteNumber(metadata.progress);
+    if (explicitProgress !== null) {
+      return Math.round(clampNumber(explicitProgress, 1, 99));
+    }
+
+    const startedAtRaw =
+      readStringValue(metadata.generationStartedAt) ||
+      readStringValue(metadata.createdAt) ||
+      readStringValue(metadata.startedAt);
+    const startedAt = startedAtRaw ? Date.parse(startedAtRaw) : NaN;
+    const elapsedMs = Number.isFinite(startedAt)
+      ? Math.max(0, Date.now() - startedAt)
+      : generationTick * 1000;
+    const simulatedProgress =
+      8 + Math.floor((1 - Math.exp(-elapsedMs / 180000)) * 91);
+    return Math.round(clampNumber(simulatedProgress, 8, 99));
+  }, [
+    data.status,
+    generationTick,
+    metadata.createdAt,
+    metadata.generationStartedAt,
+    metadata.progress,
+    metadata.startedAt,
+  ]);
   const topLeftControlsStyle = useMemo<React.CSSProperties>(
     () => ({
       transform: `scale(${overlayChromeScale})`,
@@ -303,6 +344,19 @@ export function World3DNode({
   const captureEnabled = data.status === "completed" && (activeView === "splat" || activeView === "mesh");
   const showTopLeftControls = data.status === "completed";
 
+  useEffect(() => {
+    if (data.status !== "generating") {
+      setGenerationTick(0);
+      return;
+    }
+
+    setGenerationTick(0);
+    const timer = window.setInterval(() => {
+      setGenerationTick((tick) => tick + 1);
+    }, 1000);
+    return () => window.clearInterval(timer);
+  }, [data.status, hydrationTaskId]);
+
   const persistCanvasStateSnapshot = useCallback(() => {
     if (!projectId || typeof window === "undefined") return;
     window.setTimeout(() => {
@@ -471,7 +525,7 @@ export function World3DNode({
             prompt: promptText,
             modelVersion,
             status: "completed",
-            activeView: splatUrl ? "splat" : imageUrl ? "image" : meshUrl ? "mesh" : "image",
+            activeView: meshUrl ? "mesh" : imageUrl ? "image" : splatUrl ? "splat" : "image",
             firstPerson: data.firstPerson ?? false,
             hotspots: data.hotspots || [],
             semanticsMetadata:
@@ -616,7 +670,7 @@ export function World3DNode({
           splatUrl: splatUrl || renderableSplatUrl,
           previewImage: previewImageUrl || imageUrl || data.previewImage,
           status: "completed",
-          activeView: splatUrl ? "splat" : imageUrl ? "image" : meshUrl ? "mesh" : data.activeView,
+          activeView: meshUrl ? "mesh" : imageUrl ? "image" : splatUrl ? "splat" : data.activeView,
           firstPerson: data.firstPerson ?? false,
           semanticsMetadata:
             assetPayload.semanticsMetadata && typeof assetPayload.semanticsMetadata === "object"
@@ -840,10 +894,18 @@ export function World3DNode({
               <Loader2 className="h-5 w-5 animate-spin" />
             </span>
             <span className="text-sm font-medium text-[#3f4b63] dark:text-zinc-100">
-              3D 世界生成中...
+              3D 世界生成中... {displayedGenerationProgress}%
+            </span>
+            <span className="relative h-1.5 w-36 overflow-hidden rounded-full bg-[#dfe6f3] dark:bg-zinc-800">
+              <span
+                className="absolute inset-y-0 left-0 rounded-full bg-gradient-to-r from-[#5b76fe] via-[#35d4ff] to-[#7cf4d2] transition-[width] duration-700 ease-out"
+                style={{ width: `${displayedGenerationProgress}%` }}
+              />
             </span>
             <span className="text-xs text-[#7a8395] dark:text-zinc-400">
-              {worldModelLabel || "世界资产正在构建中"}
+              {displayedGenerationProgress >= 95
+                ? "已接近完成，正在同步空间数据"
+                : worldModelLabel || "世界资产正在构建中"}
             </span>
           </div>
         </div>
diff --git a/components/canvas/world3d/World3DViewer.tsx b/components/canvas/world3d/World3DViewer.tsx
index 41339f96e..7dd2d2e8b 100644
--- a/components/canvas/world3d/World3DViewer.tsx
+++ b/components/canvas/world3d/World3DViewer.tsx
@@ -656,29 +656,27 @@ function SplatParticleCloud({
   });
 
   return (
-    <group rotation={[Math.PI, 0, 0]}>
-      <points
-        frustumCulled={false}
-        ref={pointsRef}
-        renderOrder={11}
-      >
-        <bufferGeometry ref={geometryRef}>
-          <bufferAttribute attach="attributes-position" args={[positionBuffer, 3]} />
-          <bufferAttribute attach="attributes-color" args={[data.colors, 3]} />
-        </bufferGeometry>
-        <pointsMaterial
-          blending={THREE.AdditiveBlending}
-          depthTest
-          depthWrite={false}
-          ref={materialRef}
-          size={0.02}
-          sizeAttenuation
-          toneMapped={false}
-          transparent
-          vertexColors
-        />
-      </points>
-    </group>
+    <points
+      frustumCulled={false}
+      ref={pointsRef}
+      renderOrder={11}
+    >
+      <bufferGeometry ref={geometryRef}>
+        <bufferAttribute attach="attributes-position" args={[positionBuffer, 3]} />
+        <bufferAttribute attach="attributes-color" args={[data.colors, 3]} />
+      </bufferGeometry>
+      <pointsMaterial
+        blending={THREE.AdditiveBlending}
+        depthTest
+        depthWrite={false}
+        ref={materialRef}
+        size={0.02}
+        sizeAttenuation
+        toneMapped={false}
+        transparent
+        vertexColors
+      />
+    </points>
   );
 }
 
@@ -735,28 +733,6 @@ function WorldSplatLoadingOverlay({
         </div>
       ) : null}
 
-      <div
-        className={cn(
-          "pointer-events-none absolute bottom-5 left-5 transition-all duration-300 opacity-100"
-        )}
-      >
-        <div className="rounded-2xl border border-white/10 bg-black/45 px-3 py-2 shadow-[0_20px_60px_rgba(0,0,0,0.38)] backdrop-blur-xl">
-          <div className="flex items-center gap-2 text-[11px] text-zinc-100">
-            <Sparkles className="h-3.5 w-3.5 text-cyan-200" />
-            <span>{isRevealing ? "高清世界正在接管预览" : "正在载入世界数据"}</span>
-          </div>
-          <div className="mt-1 flex items-center gap-2 text-[10px] text-zinc-400">
-            <Loader2 className="h-3 w-3 animate-spin" />
-            <span>
-              {isRevealing
-                ? "预览图已显示，世界细节正在补齐"
-                : previewImageUrl
-                  ? "先展示世界预览图，空间数据后台继续加载"
-                  : "空间数据准备中"}
-            </span>
-          </div>
-        </div>
-      </div>
     </>
   );
 }
@@ -1077,7 +1053,7 @@ function WorldSplatScene({
   );
   const groundPlaneOffset =
     typeof semanticsMetadata?.ground_plane_offset === "number"
-      ? -semanticsMetadata.ground_plane_offset
+      ? semanticsMetadata.ground_plane_offset
       : null;
   const handleOrbitControlsRef = React.useCallback((controls: any | null) => {
     orbitControlsRef.current = controls;
@@ -1111,7 +1087,7 @@ function WorldSplatScene({
     revealCompletedRef.current = false;
     setParticleCloudData(null);
     splatMesh.frustumCulled = false;
-    splatMesh.rotation.x = Math.PI;
+    splatMesh.rotation.set(0, 0, 0);
     applySparkRevealProfile(sparkRenderer, splatMesh, SPLAT_LOADING_PROFILE);
 
     let cancelled = false;