diff --git a/demos/map.sh b/demos/map.sh
new file mode 100644
index 0000000..ee16e5d
--- /dev/null
+++ b/demos/map.sh
@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+# map.sh - simple map modification showcase
+
+function hook_chunks() {
+	chunk_header
+	for (( i=0; i<4096; i++ )); do
+		chunk+="$(printf '%02x' $((RANDOM%30)))"
+	done
+	chunk_footer
+	echo "$chunk" > $TEMP/world/0000000000000000
+
+	pkt_chunk FFFFFFFF FFFFFFFF 00
+	pkt_chunk FFFFFFFF 00000000 00
+	pkt_chunk FFFFFFFF 00000001 00
+
+	pkt_chunk 00000000 FFFFFFFF 00
+	pkt_chunk 00000000 00000000
+	pkt_chunk 00000000 00000001 00
+	
+	pkt_chunk 00000001 FFFFFFFF 00
+	pkt_chunk 00000001 00000000 00
+	pkt_chunk 00000001 00000001 00
+}