Added an interim title with shader effect.

pixel_highlight.gdshader

@@ -0,0 +1,51 @@
+shader_type canvas_item;
+
+uniform float speed : hint_range(0.0, 5.0) = 1.0;
+uniform float line_width : hint_range(0.0, 0.2) = 0.15;
+uniform vec4 line_color : source_color = vec4(1.0, 1.0, 1.0, 1.0);
+uniform float pause_duration : hint_range(0.0, 6.0) = 0.15;
+uniform float offset = 2.0;
+uniform int pixelate_line : hint_range(0, 1) = 1;
+
+void fragment() {
+    vec4 base_texture = texture(TEXTURE, UV);
+    
+    // Skip fully transparent pixels
+    if (base_texture.a < 0.01) {
+        discard;
+    }
+    
+    // Cycle timing with pause at end
+    float cycle_duration = offset + pause_duration;
+    float adjusted_time = mod(TIME * speed, cycle_duration);
+    
+    // Line movement with pause (right to left)
+    float line_position;
+    if (adjusted_time <= offset) {
+        line_position = offset - adjusted_time;
+    } else {
+        line_position = -0.3;
+    }
+    
+    // Use UV directly for diagonal calculation
+    vec2 uv_for_line = UV;
+    
+    // Pixelate the line position calculation (not the texture sampling)
+    if (pixelate_line == 1) {
+        vec2 texture_size = 1.0 / TEXTURE_PIXEL_SIZE;
+        uv_for_line = floor(UV * texture_size) / texture_size;
+    }
+    
+    // Diagonal line rotation
+    vec2 rotated_uv = vec2(uv_for_line.x + uv_for_line.y, uv_for_line.y - uv_for_line.x) * 0.5;
+    float dist = abs(rotated_uv.x - line_position);
+    
+    // Line width and smoothness
+    float line_intensity = smoothstep(line_width, 0.0, dist);
+    
+    // Mix base texture with line color (respecting line_color alpha)
+    vec3 final_color = mix(base_texture.rgb, line_color.rgb, line_intensity * line_color.a);
+    
+    // Preserve original alpha
+    COLOR = vec4(final_color, base_texture.a);
+}