diff --git a/bin/ai/regression/run.sh b/bin/ai/regression/run.sh
new file mode 100644
--- /dev/null
+++ b/bin/ai/regression/run.sh
@@ -0,0 +1,49 @@
+#!/bin/sh
+
+if ! [ -f ai/regression/regression.nut ]; then
+	echo "Make sure you are in the root of OpenTTD before starting this script."
+	exit 1
+fi
+
+cp ai/regression/regression.nut ai/regression/main.nut
+cp ai/regression/regression_info.nut ai/regression/info.nut
+
+if [ -f scripts/game_start.scr ]; then
+	mv scripts/game_start.scr scripts/game_start.src.regression
+fi
+
+params=""
+gdb=""
+if [ "$1" != "-r" ]; then
+	params="-snull -mnull -vnull:ticks=30000"
+fi
+if [ "$1" = "-g" ]; then
+	gdb="gdb --ex run --args "
+fi
+if [ -n "$gdb" ]; then
+	$gdb ./openttd -x -c ai/regression/regression.cfg $params -g ai/regression/regression.sav
+else
+	./openttd -x -c ai/regression/regression.cfg $params -g ai/regression/regression.sav -d ai=2 2>&1 | awk '{ gsub("0x\\(nil\\)", "0x00000000", $0); gsub("^dbg: \\[ai\\]", "", $0); gsub("^ ", "ERROR: ", $0); gsub("ERROR: \\[1\\] ", "", $0); gsub("\\[P\\] ", "", $0); print $0; }' > tmp.regression
+fi
+
+if [ -z "$gdb" ]; then
+	res="`diff -ub ai/regression/regression.txt tmp.regression`"
+	if [ -z "$res" ]; then
+		echo "Regression test passed!"
+	else
+		echo "Regression test failed! Difference:"
+		echo "$res"
+	fi
+	echo ""
+	echo "Regression test done"
+fi
+
+rm -f ai/regression/main.nut ai/regression/info.nut
+
+if [ -f scripts/game_start.scr.regression ]; then
+	mv scripts/game_start.scr.regression scripts/game_start.src
+fi
+
+if [ "$1" != "-k" ]; then
+	rm -f tmp.regression
+fi