diff --git a/demo/blocky.py b/demo/blocky.py
new file mode 100644
index 0000000..dfdb6a2
--- /dev/null
+++ b/demo/blocky.py
@@ -0,0 +1,42 @@
+#!/usr/bin/python
+# generates a PWAD with 256 64x64-sized flat color patches and textures named
+# COLORXXX and 256 flats named FOLORXXX where XXX is a decimal index into the
+# palette
+
+from omg import *
+from omg.txdef import *
+import struct
+
+out  = WAD()
+editor = omg.txdef.Textures()
+
+for i in range(0,256):
+
+    # generate raw patch data for palette index i
+    topdelta = 0
+    length = 64
+    unused = 0
+    data = i
+    post = struct.pack('<BBB64sB', topdelta, length, unused, bytes([data])*64, unused)
+    width = height = 64
+    leftoffs = topoffs = 0
+    postoffs = 264
+    patch = struct.pack('<HHhh', width, height, leftoffs, topoffs) \
+            + struct.pack('<L', postoffs) * 64 \
+            + post
+    gr = Graphic()
+    gr.data = patch
+    name = "COLOR{:03d}".format(i)
+    out.patches[name] = gr
+
+    # generate a texture entry
+    editor.simple(name, out.patches[name])
+
+    # generate a flat
+    name = "FOLOR{:03d}".format(i)
+    flat = Flat()
+    flat.load_raw(bytes([i])*4096)
+    out.flats[name] = flat
+
+out.txdefs = editor.to_lumps()
+out.to_file('out.wad')