diff -urNad polygen.orig/polygen-1.0.6.ds2/debian/rules polygen/polygen-1.0.6.ds2/debian/rules
--- polygen.orig/polygen-1.0.6.ds2/debian/rules	2015-01-29 12:23:55.134601132 +0000
+++ polygen/polygen-1.0.6.ds2/debian/rules	2015-01-29 13:22:28.293057129 +0000
@@ -6,7 +6,9 @@
 
 POLYGEN_BASE=.
 DEB_BUILDDIR=$(POLYGEN_BASE)/src
-POLYGEN=$(DEB_BUILDDIR)/polygen
+POLYGEN_BIN=$(DEB_BUILDDIR)/polygen
+POLYGEN_SEED = $(shell date --date="$(shell dpkg-parsechangelog --show-field Date)" +%s)
+POLYGEN=$(POLYGEN_BIN) -seed $(POLYGEN_SEED)
 export POLYGEN
 
 # set $(NATIVE) to true if this arch has an optimising compiler
@@ -44,7 +46,7 @@
 	find $(POLYGEN_BASE)/grm/ -name \*.grm | debian/make_polygen-data_manpage > polygen-data.6
 
 install/polygen::
-	install -o root -g root -m 755 $(POLYGEN) debian/$(cdbs_curpkg)/usr/games/
+	install -o root -g root -m 755 $(POLYGEN_BIN) debian/$(cdbs_curpkg)/usr/games/
 	install -o root -g root -m 755 -d debian/$(cdbs_curpkg)/usr/share/doc/polygen
 	install -o root -g root -m 644 $(POLYGEN_BASE)/eng/HOWTO-Refman.html debian/$(cdbs_curpkg)/usr/share/doc/polygen/HOWTO-Refman.en.html
 	install -o root -g root -m 644 $(POLYGEN_BASE)/ita/HOWTO-Refman.html debian/$(cdbs_curpkg)/usr/share/doc/polygen/HOWTO-Refman.it.html