diff --git a/.gitignore b/.gitignore
index 1d13293..7909c4b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ games/*/saves/
 .DS_Store
 web/dist/
 web/game.bundle.json
+.claude/
diff --git a/mrpci/src/main.rs b/mrpci/src/main.rs
index ac9adf9..94c6e21 100644
--- a/mrpci/src/main.rs
+++ b/mrpci/src/main.rs
@@ -229,21 +229,25 @@ async fn amain(game_dir: String) {
     let mut index_img = Image::gen_image_color(PIC_W as u16, PIC_H as u16, BLACK);
     let index_tex = Texture2D::from_image(&index_img);
     index_tex.set_filter(FilterMode::Nearest);
-    let mut pal_img = Image::gen_image_color(256, 1, BLACK);
-    let pal_tex = Texture2D::from_image(&pal_img);
-    pal_tex.set_filter(FilterMode::Nearest);
-    let material = load_material(
-        ShaderSource::Glsl { vertex: CRT_VERTEX, fragment: CRT_FRAGMENT },
-        MaterialParams {
-            textures: vec!["palette_tex".to_string()],
-            uniforms: vec![
-                UniformDesc::new("crt", UniformType::Float1),
-                UniformDesc::new("fade", UniformType::Float1),
-            ],
-            ..Default::default()
-        },
-    )
-    .expect("CRT shader compiles");
+    #[cfg(not(target_arch = "wasm32"))]
+    let (mut pal_img, pal_tex, material) = {
+        let pal_img = Image::gen_image_color(256, 1, BLACK);
+        let pal_tex = Texture2D::from_image(&pal_img);
+        pal_tex.set_filter(FilterMode::Nearest);
+        let material = load_material(
+            ShaderSource::Glsl { vertex: CRT_VERTEX, fragment: CRT_FRAGMENT },
+            MaterialParams {
+                textures: vec!["palette_tex".to_string()],
+                uniforms: vec![
+                    UniformDesc::new("crt", UniformType::Float1),
+                    UniformDesc::new("fade", UniformType::Float1),
+                ],
+                ..Default::default()
+            },
+        )
+        .expect("CRT shader compiles");
+        (pal_img, pal_tex, material)
+    };
 
     let mut last_dir_sent: u8 = 0;
     let mut ed = editor::Editor::new();
@@ -496,28 +500,51 @@ async fn amain(game_dir: String) {
         // --- draw ------------------------------------------------------------
         clear_background(Color::from_rgba(12, 12, 16, 255));
 
-        // Indices into the R channel; the shader does the palette lookup.
-        let indices = gs.render_indices(true);
-        for (i, &idx) in indices.iter().enumerate() {
-            index_img.bytes[i * 4] = idx;
-            index_img.bytes[i * 4 + 3] = 255;
-        }
-        index_tex.update(&index_img);
-        pal_img.bytes.copy_from_slice(&gs.effective_palette());
-        pal_tex.update(&pal_img);
+        // Native: indices into the R channel; the CRT shader does the
+        // palette lookup, scanlines, curvature and fades on the GPU.
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            let indices = gs.render_indices(true);
+            for (i, &idx) in indices.iter().enumerate() {
+                index_img.bytes[i * 4] = idx;
+                index_img.bytes[i * 4 + 3] = 255;
+            }
+            index_tex.update(&index_img);
+            pal_img.bytes.copy_from_slice(&gs.effective_palette());
+            pal_tex.update(&pal_img);
 
-        gl_use_material(&material);
-        material.set_texture("palette_tex", pal_tex.clone());
-        material.set_uniform("crt", if ui.scanlines { 1.0f32 } else { 0.0f32 });
-        material.set_uniform("fade", ui.fade);
-        draw_texture_ex(
-            &index_tex,
-            0.0,
-            BAR_H,
-            WHITE,
-            DrawTextureParams { dest_size: Some(vec2(PIC_W as f32 * SCALE, PIC_H as f32 * SCALE)), ..Default::default() },
-        );
-        gl_use_default_material();
+            gl_use_material(&material);
+            material.set_texture("palette_tex", pal_tex.clone());
+            material.set_uniform("crt", if ui.scanlines { 1.0f32 } else { 0.0f32 });
+            material.set_uniform("fade", ui.fade);
+            draw_texture_ex(
+                &index_tex,
+                0.0,
+                BAR_H,
+                WHITE,
+                DrawTextureParams { dest_size: Some(vec2(PIC_W as f32 * SCALE, PIC_H as f32 * SCALE)), ..Default::default() },
+            );
+            gl_use_default_material();
+        }
+
+        // Web: miniquad's GL shim and the multi-texture material don't get
+        // along (stale-texture binds, frozen frame) — take the MRPGI-proven
+        // path instead: CPU palette blit, plain textured quad. The CRT stays
+        // a desktop luxury.
+        #[cfg(target_arch = "wasm32")]
+        {
+            let rgba = gs.render_visual(true);
+            index_img.bytes.copy_from_slice(&rgba);
+            index_tex.update(&index_img);
+            let tint = (ui.fade * 255.0) as u8;
+            draw_texture_ex(
+                &index_tex,
+                0.0,
+                BAR_H,
+                Color::from_rgba(tint, tint, tint, 255),
+                DrawTextureParams { dest_size: Some(vec2(PIC_W as f32 * SCALE, PIC_H as f32 * SCALE)), ..Default::default() },
+            );
+        }
 
         if ui.flash > 0.0 {
             draw_rectangle(