diff --git a/GNUmakefile b/GNUmakefile
new file mode 100644
index 000000000..5127449c1
--- /dev/null
+++ b/GNUmakefile
@@ -0,0 +1,12 @@
+
+UNZIPOPTS = -L -o
+
+extract/%:
+	unzip $(UNZIPOPTS) -d extract $< $(subst extract/,,$@)
+
+extract/requiem.wad: pwads/requiem.zip
+extract/mm2.wad: pwads/mm2.zip
+extract/mm.wad: pwads/mm_allup.zip
+extract/hr.wad: pwads/hr.zip
+extract/av.wad: pwads/av_new.zip
+extract/class_ep.wad: pwads/class_ep.zip
diff --git a/extract/.gitignore b/extract/.gitignore
new file mode 100644
index 000000000..5a1b5f1b3
--- /dev/null
+++ b/extract/.gitignore
@@ -0,0 +1 @@
+*.wad