diff --git a/src/experimental/demo/marching_squares_demo.scad b/src/experimental/demo/marching_squares_demo.scad
index d86bc043..dac1da0a 100644
--- a/src/experimental/demo/marching_squares_demo.scad
+++ b/src/experimental/demo/marching_squares_demo.scad
@@ -3,6 +3,8 @@ use <util/rand.scad>;
 use <experimental/pnoise2.scad>;
 use <experimental/marching_squares.scad>;
 
+style = "ISOLINES"; // [ISOLINES, ISOBANDS]
+
 seed = rand(0, 256);
 points = [
     for(y = [0:.2:10]) [
@@ -10,10 +12,19 @@ points = [
     ]
 ];
 
-for(row = marching_squares(points, 0.1)) {
-    for(line = row) {
-        p0 = [line[0][0], line[0][1]];
-        p1 = [line[1][0], line[1][1]];
-        hull_polyline2d([p0, p1], width = .1);
-    }
-}    
\ No newline at end of file
+if(style == "ISOLINES") {
+    for(row = marching_squares(points, 0.1)) {
+        for(line = row) {
+            p0 = [line[0][0], line[0][1]];
+            p1 = [line[1][0], line[1][1]];
+            hull_polyline2d([p0, p1], width = .1);
+        }
+    }    
+}
+else {
+    for(row = marching_squares(points, [-.2, .2])) {
+        for(iso_band = row) {
+            polygon([for(p = iso_band) [p[0], p[1]]]);
+        }
+    } 
+}
\ No newline at end of file