diff --git a/Makefile b/Makefile
index acb8fbc..a9affb9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,23 +1,28 @@
-PNGFILES := $(shell find png/sprite -type f -name '*.png')
-IMGFILES := $(PNGFILES:%.png=%.2bpp)
-
-COLLFILES := $(shell find png/map -type f -name '*_coll.png')
-BUILT_COLLFILES := $(COLLFILES:%_coll.png=%.s)
-
+# Graphics
+SPRITE_PNG := $(shell find png/sprite -type f -name '*.png')
+MAP_PNG    := $(shell find png/map -type f -name '*.png' -not -name '*_coll.png')
+MAP_COLL   := $(shell find png/map -type f -name '*_coll.png')
+MAP_ASM    := $(MAP_PNG:%.png:%.s)
+ALL_2BPP   := $(SPRITE_PNG:%.png=%.2bpp) $(MAP_PNG:%.png=%.map.2bpp) $(MAP_PNG:%.png=%.tiles.2bpp)
+
+# Code
 SFILES := $(shell find src -type f -name '*.s')
-OFILES := $(SFILES:%.s=%.o)
+OFILES := $(SFILES:%.s=%.o) $(MAP_ASM)
 
 .PHONY: clean
 
-is.gb is.gb.sym: $(IMGFILES) $(OFILES) $(BUILT_COLLFILES)
+is.gb is.gb.sym:$(OFILES) $(ALL_2BPP)
 	rgblink -o $@ -n $@.sym $(OFILES)
 	rgbfix -v $@
 
-$(OFILES): $(IMGFILES)
+$(OFILES): $(ALL_2BPP)
 
 %.o: %.s
 	rgbasm -i inc -o $@ $<
 
+png/map/%.tiles.2bpp png/map/%.map.2bpp: png/map/%.png
+	rgbgfx -u -t $(<:%.png=%.map.2bpp) -o $(<:%.png=%.tiles.2bpp) $<
+
 png/map/%.s: png/map/%_coll.png
 	python scripts/generate_coll_map.py -o $@ $<
 
@@ -25,4 +30,4 @@ png/sprite/%.2bpp: png/sprite/%.png
 	rgbgfx -o $@ $<
 
 clean:
-	rm -f is.gb is.gb.sym $(IMGFILES) $(OFILES) $(BUILT_COLLFILES)
\ No newline at end of file
+	rm -f is.gb is.gb.sym $(ALL_2BPP) $(OFILES) $(MAP_ASM)
\ No newline at end of file
diff --git a/png/map/intro.png b/png/map/intro.png
new file mode 100644
index 0000000..f45d373
Binary files /dev/null and b/png/map/intro.png differ
diff --git a/src/bg.s b/src/bg.s
index c27de18..6dd8fba 100644
--- a/src/bg.s
+++ b/src/bg.s
@@ -22,71 +22,9 @@ sceneHeight EQU 18
 SECTION "BG0", ROM0
 
 bg:
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $01,$02,$02,$03,$00,$00,$00,$00,$01,$02
-DB $02,$02,$02,$02,$02,$0A,$03,$00,$00,$00
-DB $07,$09,$09,$08,$00,$00,$00,$00,$07,$09
-DB $09,$09,$09,$09,$09,$0B,$08,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$0C,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$0A,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$0B,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$0C,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$0A,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$01,$02,$02,$02,$02,$02
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$07,$09,$09,$09,$09,$09
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$01,$02,$02,$02
-DB $02,$02,$03,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$07,$09,$09,$09
-DB $09,$09,$08,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $00,$00,$00,$00,$00,$00,$00,$00,$00,$00
-DB $01,$02,$02,$02,$02,$02,$02,$02,$02,$02
-DB $02,$02,$02,$02,$02,$02,$02,$02,$02,$02
-DB $04,$06,$06,$06,$06,$06,$06,$06,$06,$06
-DB $06,$06,$06,$06,$06,$06,$06,$06,$06,$06
-bg_end:
-
+    INCBIN "png/map/intro.map.2bpp"
 bg_tiles:
-    DB $00,$00,$00,$00,$00,$00,$00,$00
-    DB $00,$00,$00,$00,$00,$00,$00,$00
-    DB $FF,$FF,$DF,$80,$FD,$80,$77,$40
-    DB $3F,$3F,$22,$3D,$20,$3F,$28,$37
-    DB $FF,$FF,$DF,$00,$FD,$00,$F7,$00
-    DB $FF,$FF,$40,$BF,$01,$FE,$10,$EF
-    DB $FF,$FF,$FB,$01,$BF,$01,$EE,$02
-    DB $FC,$FC,$44,$BC,$04,$FC,$14,$EC
-    DB $22,$3D,$30,$2F,$24,$3B,$20,$3F
-    DB $20,$3F,$32,$2D,$20,$3F,$28,$37
-    DB $44,$BC,$0C,$F4,$24,$DC,$04,$FC
-    DB $04,$FC,$4C,$B4,$04,$FC,$14,$EC
-    DB $40,$BF,$02,$FD,$20,$DF,$00,$FF
-    DB $08,$F7,$40,$BF,$02,$FD,$10,$EF
-    DB $20,$3F,$22,$3D,$10,$1F,$0F,$0F
-    DB $00,$00,$00,$00,$00,$00,$00,$00
-    DB $04,$FC,$44,$BC,$08,$F8,$F0,$F0
-    DB $00,$00,$00,$00,$00,$00,$00,$00
-    DB $40,$BF,$02,$FD,$20,$DF,$FF,$FF
-    DB $00,$00,$00,$00,$00,$00,$00,$00
-    DB $FF,$FF,$FF,$81,$FF,$81,$FF,$81
-    DB $FF,$FF,$FF,$FF,$FF,$FF,$FF,$81
-    DB $FF,$81,$FF,$81,$FF,$FF,$FF,$FF
-    DB $FF,$FF,$FF,$81,$FF,$81,$FF,$81
-    DB $FF,$FF,$FF,$FF,$FF,$FF,$FF,$81
-    DB $FF,$81,$FF,$81,$FF,$FF,$FF,$FF
+    INCBIN "png/map/intro.tiles.2bpp"
 bg_tiles_end:
 
 BG_Init::