diff --git a/Packaging/resources/assets/Levels/L1Data/SklKngT.dun b/Packaging/resources/assets/Levels/L1Data/SklKngT.dun
new file mode 100644
index 000000000..8e6166ab2
Binary files /dev/null and b/Packaging/resources/assets/Levels/L1Data/SklKngT.dun differ
diff --git a/Packaging/resources/assets/Levels/L2Data/bonechaT.dun b/Packaging/resources/assets/Levels/L2Data/bonechaT.dun
new file mode 100644
index 000000000..2645dc45c
Binary files /dev/null and b/Packaging/resources/assets/Levels/L2Data/bonechaT.dun differ
diff --git a/Source/gendung.cpp b/Source/gendung.cpp
index 21bbfec4a..7567442ef 100644
--- a/Source/gendung.cpp
+++ b/Source/gendung.cpp
@@ -502,30 +502,6 @@ void DRLG_CopyTrans(int sx, int sy, int dx, int dy)
 	dTransVal[dx][dy] = dTransVal[sx][sy];
 }
 
-void DRLG_ListTrans(int num, BYTE *list)
-{
-	for (int i = 0; i < num; i++) {
-		uint8_t x1 = *list++;
-		uint8_t y1 = *list++;
-		uint8_t x2 = *list++;
-		uint8_t y2 = *list++;
-		DRLG_RectTrans(x1, y1, x2, y2);
-	}
-}
-
-void DRLG_AreaTrans(int num, BYTE *list)
-{
-	for (int i = 0; i < num; i++) {
-		uint8_t x1 = *list++;
-		uint8_t y1 = *list++;
-		uint8_t x2 = *list++;
-		uint8_t y2 = *list++;
-		DRLG_RectTrans(x1, y1, x2, y2);
-		TransVal--;
-	}
-	TransVal++;
-}
-
 void DRLG_InitSetPC()
 {
 	SetPiecesRoom = { { -1, -1 }, { -1, -1 } };
diff --git a/Source/gendung.h b/Source/gendung.h
index b74c2fa3e..114fa9b2b 100644
--- a/Source/gendung.h
+++ b/Source/gendung.h
@@ -333,8 +333,6 @@ void DRLG_InitTrans();
 void DRLG_MRectTrans(int x1, int y1, int x2, int y2);
 void DRLG_RectTrans(int x1, int y1, int x2, int y2);
 void DRLG_CopyTrans(int sx, int sy, int dx, int dy);
-void DRLG_ListTrans(int num, BYTE *List);
-void DRLG_AreaTrans(int num, BYTE *List);
 void DRLG_InitSetPC();
 void DRLG_SetPC();
 void Make_SetPC(int x, int y, int w, int h);
diff --git a/Source/setmaps.cpp b/Source/setmaps.cpp
index 21f388d66..1a1cdefb9 100644
--- a/Source/setmaps.cpp
+++ b/Source/setmaps.cpp
@@ -34,60 +34,6 @@ const char *const QuestLevelNames[] = {
 
 namespace {
 
-// BUGFIX: constant data should be const
-BYTE SkelKingTrans1[] = {
-	19, 47, 26, 55,
-	26, 49, 30, 53
-};
-
-BYTE SkelKingTrans2[] = {
-	33, 19, 47, 29,
-	37, 29, 43, 39
-};
-
-BYTE SkelKingTrans3[] = {
-	27, 53, 35, 61,
-	27, 35, 34, 42,
-	45, 35, 53, 43,
-	45, 53, 53, 61,
-	31, 39, 49, 57
-};
-
-BYTE SkelKingTrans4[] = {
-	49, 45, 58, 51,
-	57, 31, 62, 37,
-	63, 31, 69, 40,
-	59, 41, 73, 55,
-	63, 55, 69, 65,
-	73, 45, 78, 51,
-	79, 43, 89, 53
-};
-
-BYTE SkelChamTrans1[] = {
-	43, 19, 50, 26,
-	51, 19, 59, 26,
-	35, 27, 42, 34,
-	43, 27, 49, 34,
-	50, 27, 59, 34
-};
-
-BYTE SkelChamTrans2[] = {
-	19, 31, 34, 47,
-	34, 35, 42, 42
-};
-
-BYTE SkelChamTrans3[] = {
-	43, 35, 50, 42,
-	51, 35, 62, 42,
-	63, 31, 66, 46,
-	67, 31, 78, 34,
-	67, 35, 78, 42,
-	67, 43, 78, 46,
-	35, 43, 42, 51,
-	43, 43, 49, 51,
-	50, 43, 59, 51
-};
-
 void AddSKingObjs()
 {
 	constexpr Rectangle SmallSecretRoom { { 20, 7 }, { 3, 3 } };
@@ -152,10 +98,7 @@ void LoadSetMap()
 		LoadPreL1Dungeon("Levels\\L1Data\\SklKng1.DUN");
 		LoadL1Dungeon("Levels\\L1Data\\SklKng2.DUN", 83, 45);
 		LoadPalette("Levels\\L1Data\\L1_2.pal");
-		DRLG_AreaTrans(sizeof(SkelKingTrans1) / 4, &SkelKingTrans1[0]);
-		DRLG_ListTrans(sizeof(SkelKingTrans2) / 4, &SkelKingTrans2[0]);
-		DRLG_AreaTrans(sizeof(SkelKingTrans3) / 4, &SkelKingTrans3[0]);
-		DRLG_ListTrans(sizeof(SkelKingTrans4) / 4, &SkelKingTrans4[0]);
+		SetMapTransparency("Levels\\L1Data\\SklKngT.dun");
 		AddL1Objs(0, 0, MAXDUNX, MAXDUNY);
 		AddSKingObjs();
 		InitSKingTriggers();
@@ -164,9 +107,7 @@ void LoadSetMap()
 		LoadPreL2Dungeon("Levels\\L2Data\\Bonecha2.DUN");
 		LoadL2Dungeon("Levels\\L2Data\\Bonecha1.DUN", 69, 39);
 		LoadPalette("Levels\\L2Data\\L2_2.pal");
-		DRLG_ListTrans(sizeof(SkelChamTrans1) / 4, &SkelChamTrans1[0]);
-		DRLG_AreaTrans(sizeof(SkelChamTrans2) / 4, &SkelChamTrans2[0]);
-		DRLG_ListTrans(sizeof(SkelChamTrans3) / 4, &SkelChamTrans3[0]);
+		SetMapTransparency("Levels\\L2Data\\BonechaT.dun");
 		AddL2Objs(0, 0, MAXDUNX, MAXDUNY);
 		AddSChamObjs();
 		InitSChambTriggers();