diff --git a/Makefile b/Makefile
index 07e0fba..cdd2c68 100644
--- a/Makefile
+++ b/Makefile
@@ -40,8 +40,10 @@ DECOMPAT_INPUTS=$(MAIN_INC)/lith_weapons.h \
                 $(MAIN_INC)/lith_upgradenames.h \
                 $(MAIN_INC)/lith_scorenums.h
 
+7Z_ARGS=-xr!.gitignore -xr!*.bat -xr!*.dbs -xr!*.wad.b* -xr!dummy.txt -tzip
+
 ## Targets
-.PHONY: bin dec clean text
+.PHONY: bin dec clean text pkg
 
 all: dec text bin
 bin: $(LIB_BINARY) $(MAIN_BINARY)
@@ -62,6 +64,13 @@ clean:
 	@echo CLEAN
 	@rm -f $(MAIN_OUTPUTS) $(LIB_OUTPUTS)
 
+pkg: Lithium.pk3
+
+Lithium.pk3: $(wildcard pk/* pkdata/* pksrc/*)
+	7za u $(7Z_ARGS) -- $@ "./pk/*"
+	7za u $(7Z_ARGS) -- $@ "./pkdata/*"
+	7za u $(7Z_ARGS) -- $@ "./pksrc/*"
+
 ## .ir -> .bin
 $(LIB_BINARY): $(LIB_OUTPUTS)
 	@echo LD $@