diff --git a/forge-steel b/forge-steel
index 1c6cadd..ba13569 160000
--- a/forge-steel
+++ b/forge-steel
@@ -1 +1 @@
-Subproject commit 1c6cadd4c6310a714bdac90a10caf776c47b3a4f
+Subproject commit ba13569696bc82ecadc3a5a5da99e9b1f09c09c2
diff --git a/project/inc_src.glsl b/project/inc_src.glsl
index 7791eb3..1ccd8b6 100644
--- a/project/inc_src.glsl
+++ b/project/inc_src.glsl
@@ -299,11 +299,51 @@ vec4 src_9(vec2 vUV, sampler2D self, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f
     return vec4(f);
 }
 
-// SRC 10 :
+const int dungeon_characters[] = int[11](
+    0x09, 0x0A, 0x19, 0x1A, 0x1B, 0x0C, 0x21, 0x22, 0x23, 0x08, 0x0B
+);
+
+// SRC 10 : SCROLLER
 vec4 src_10(vec2 vUV, sampler2D self, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3)
 {
-    // TODO
-    return src_1(vUV, self, seed, b1, f1, b2, f2, b3, f3);
+    // start
+
+    vec2 uv0 = vUV.st;
+    float ratio = iResolution.x / iResolution.y;
+    vec2 uv1 = (uv0 - 0.5) * vec2(ratio, 1.);
+
+    // controls
+
+    float zoom = magic(f1, b1, seed + 10.) * 5. + 5.;
+    float slope = magic(f2, b2, seed + 20.);
+    float character = magic(f3, b3, seed + 30.) * 10;
+
+    // logic
+
+    float chances = 0.7;
+
+    vec2 uv2 = uv1 * zoom;
+
+    uv2 *= rot(slope);
+
+    vec2 iuv2 = ivec2(uv2);
+    vec2 uv3 = uv2 + vec2(iBeats * 4., 0);
+    vec2 iuv3 = ivec2(uv3);
+
+    int code = 0xA9;
+    bool bridge = mod(iuv3.x, 40) > 30.;
+
+    if (iuv3.y < -1) {
+        code = bridge ? 0xA9 : 0x9F;
+    } else if (iuv3.y == -1) {
+        code = bridge ? 0x9A : 0xA0;
+    }
+
+    float f = dungeon(fract(uv3), code) ? 1. : 0.;
+
+    f += dungeon_at(uv2, vec2(-0.5, -1 + abs(sin(iBeats * 5.))), dungeon_characters[int(character)]);
+
+    return vec4(f);
 }
 
 // SRC 11 : isometric grid