diff --git a/patches/minecraft/net/minecraft/client/Minecraft.java.patch b/patches/minecraft/net/minecraft/client/Minecraft.java.patch
index 4adc23476..df83ecd05 100644
--- a/patches/minecraft/net/minecraft/client/Minecraft.java.patch
+++ b/patches/minecraft/net/minecraft/client/Minecraft.java.patch
@@ -16,7 +16,7 @@
        this.field_71459_aj = p_i45547_1_.field_178741_d.field_178756_a;
        this.field_238175_ae_ = !p_i45547_1_.field_178741_d.field_239099_d_;
        this.field_238176_af_ = !p_i45547_1_.field_178741_d.field_239100_e_;
-@@ -416,13 +416,13 @@
+@@ -416,14 +416,15 @@
  
        this.field_195558_d.func_216526_a(this.field_71474_y.field_74350_i);
        this.field_71417_B = new MouseHelper(this);
@@ -29,9 +29,11 @@
        this.field_110451_am = new SimpleReloadableResourceManager(ResourcePackType.CLIENT_RESOURCES);
 +      net.minecraftforge.fml.client.ClientModLoader.begin(this, this.field_110448_aq, this.field_110451_am, this.field_195554_ax);
        this.field_110448_aq.func_198983_a();
++      DatapackCodec.field_234880_a_.addModPacks(net.minecraftforge.common.ForgeHooks.getModPacks());
        this.field_71474_y.func_198017_a(this.field_110448_aq);
        this.field_135017_as = new LanguageManager(this.field_71474_y.field_74363_ab);
-@@ -463,6 +463,7 @@
+       this.field_110451_am.func_219534_a(this.field_135017_as);
+@@ -463,6 +464,7 @@
        this.func_193986_ar();
        this.field_110451_am.func_219534_a(this.field_193995_ae);
        this.field_71452_i = new ParticleManager(this.field_71441_e, this.field_71446_o);
@@ -39,7 +41,7 @@
        this.field_110451_am.func_219534_a(this.field_71452_i);
        this.field_213272_aL = new PaintingSpriteUploader(this.field_71446_o);
        this.field_110451_am.func_219534_a(this.field_213272_aL);
-@@ -470,7 +471,8 @@
+@@ -470,7 +472,8 @@
        this.field_110451_am.func_219534_a(this.field_213273_aM);
        this.field_241557_ar_ = new GPUWarning();
        this.field_110451_am.func_219534_a(this.field_241557_ar_);
@@ -49,7 +51,7 @@
        this.field_184132_p = new DebugRenderer(this);
        RenderSystem.setErrorCallback(this::func_195545_a);
        if (this.field_71474_y.field_74353_u && !this.field_195558_d.func_198113_j()) {
-@@ -482,11 +484,6 @@
+@@ -482,11 +485,6 @@
        this.field_195558_d.func_224798_d(this.field_71474_y.field_225307_E);
        this.field_195558_d.func_227801_c_();
        this.func_213226_a();
@@ -61,7 +63,7 @@
  
        ResourceLoadProgressGui.func_212970_a(this);
        List<IResourcePack> list = this.field_110448_aq.func_232623_f_();
-@@ -495,7 +492,14 @@
+@@ -495,7 +493,14 @@
              if (SharedConstants.field_206244_b) {
                 this.func_213256_aB();
              }
@@ -77,7 +79,7 @@
           });
        }, false));
     }
-@@ -534,7 +538,7 @@
+@@ -534,7 +539,7 @@
     }
  
     private void func_229988_a_(Throwable p_229988_1_) {
@@ -86,7 +88,7 @@
           ITextComponent itextcomponent;
           if (p_229988_1_ instanceof SimpleReloadableResourceManager.FailedPackException) {
              itextcomponent = new StringTextComponent(((SimpleReloadableResourceManager.FailedPackException)p_229988_1_).func_241203_a().func_195762_a());
-@@ -618,7 +622,7 @@
+@@ -618,7 +623,7 @@
           return Stream.of(Registry.field_212630_s.func_177774_c(p_213251_0_.func_77973_b()));
        });
        SearchTreeReloadable<ItemStack> searchtreereloadable = new SearchTreeReloadable<>((p_213235_0_) -> {
@@ -95,7 +97,7 @@
        });
        NonNullList<ItemStack> nonnulllist = NonNullList.func_191196_a();
  
-@@ -688,13 +692,13 @@
+@@ -688,13 +693,13 @@
        Bootstrap.func_179870_a(p_71377_0_.func_71502_e());
        if (p_71377_0_.func_71497_f() != null) {
           Bootstrap.func_179870_a("#@!@# Game crashed! Crash report saved to: #@!@# " + p_71377_0_.func_71497_f());
@@ -112,7 +114,7 @@
        }
  
     }
-@@ -703,6 +707,7 @@
+@@ -703,6 +708,7 @@
        return this.field_71474_y.field_211842_aO;
     }
  
@@ -120,7 +122,7 @@
     public CompletableFuture<Void> func_213237_g() {
        if (this.field_213276_aV != null) {
           return this.field_213276_aV;
-@@ -791,10 +796,6 @@
+@@ -791,10 +797,6 @@
     }
  
     public void func_147108_a(@Nullable Screen p_147108_1_) {
@@ -131,7 +133,7 @@
        if (p_147108_1_ == null && this.field_71441_e == null) {
           p_147108_1_ = new MainMenuScreen();
        } else if (p_147108_1_ == null && this.field_71439_g.func_233643_dh_()) {
-@@ -805,6 +806,14 @@
+@@ -805,6 +807,14 @@
           }
        }
  
@@ -146,7 +148,7 @@
        if (p_147108_1_ instanceof MainMenuScreen || p_147108_1_ instanceof MultiplayerScreen) {
           this.field_71474_y.field_74330_P = false;
           this.field_71456_v.func_146158_b().func_146231_a(true);
-@@ -936,11 +945,13 @@
+@@ -936,11 +946,13 @@
        RenderSystem.enableCull();
        this.field_71424_I.func_76319_b();
        if (!this.field_71454_w) {
@@ -160,7 +162,7 @@
        }
  
        if (this.field_238174_aV_ != null) {
-@@ -1039,7 +1050,7 @@
+@@ -1039,7 +1051,7 @@
  
        Framebuffer framebuffer = this.func_147110_a();
        framebuffer.func_216491_a(this.field_195558_d.func_198109_k(), this.field_195558_d.func_198091_l(), field_142025_a);
@@ -169,7 +171,7 @@
        this.field_71417_B.func_198021_g();
     }
  
-@@ -1227,11 +1238,21 @@
+@@ -1227,11 +1239,21 @@
           if (p_147115_1_ && this.field_71476_x != null && this.field_71476_x.func_216346_c() == RayTraceResult.Type.BLOCK) {
              BlockRayTraceResult blockraytraceresult = (BlockRayTraceResult)this.field_71476_x;
              BlockPos blockpos = blockraytraceresult.func_216350_a();
@@ -193,7 +195,7 @@
                 }
              }
  
-@@ -1250,6 +1271,8 @@
+@@ -1250,6 +1272,8 @@
              }
  
           } else if (!this.field_71439_g.func_184838_M()) {
@@ -202,7 +204,7 @@
              switch(this.field_71476_x.func_216346_c()) {
              case ENTITY:
                 this.field_71442_b.func_78764_a(this.field_71439_g, ((EntityRayTraceResult)this.field_71476_x).func_216348_a());
-@@ -1257,7 +1280,7 @@
+@@ -1257,7 +1281,7 @@
              case BLOCK:
                 BlockRayTraceResult blockraytraceresult = (BlockRayTraceResult)this.field_71476_x;
                 BlockPos blockpos = blockraytraceresult.func_216350_a();
@@ -211,7 +213,7 @@
                    this.field_71442_b.func_180511_b(blockpos, blockraytraceresult.func_216354_b());
                    break;
                 }
-@@ -1267,8 +1290,10 @@
+@@ -1267,8 +1291,10 @@
                 }
  
                 this.field_71439_g.func_184821_cY();
@@ -222,7 +224,7 @@
              this.field_71439_g.func_184609_a(Hand.MAIN_HAND);
           }
        }
-@@ -1283,6 +1308,11 @@
+@@ -1283,6 +1309,11 @@
              }
  
              for(Hand hand : Hand.values()) {
@@ -234,7 +236,7 @@
                 ItemStack itemstack = this.field_71439_g.func_184586_b(hand);
                 if (this.field_71476_x != null) {
                    switch(this.field_71476_x.func_216346_c()) {
-@@ -1296,6 +1326,7 @@
+@@ -1296,6 +1327,7 @@
  
                       if (actionresulttype.func_226246_a_()) {
                          if (actionresulttype.func_226247_b_()) {
@@ -242,7 +244,7 @@
                             this.field_71439_g.func_184609_a(hand);
                          }
  
-@@ -1308,6 +1339,7 @@
+@@ -1308,6 +1340,7 @@
                       ActionResultType actionresulttype1 = this.field_71442_b.func_217292_a(this.field_71439_g, this.field_71441_e, hand, blockraytraceresult);
                       if (actionresulttype1.func_226246_a_()) {
                          if (actionresulttype1.func_226247_b_()) {
@@ -250,7 +252,7 @@
                             this.field_71439_g.func_184609_a(hand);
                             if (!itemstack.func_190926_b() && (itemstack.func_190916_E() != i || this.field_71442_b.func_78758_h())) {
                                this.field_71460_t.field_78516_c.func_187460_a(hand);
-@@ -1323,6 +1355,9 @@
+@@ -1323,6 +1356,9 @@
                    }
                 }
  
@@ -260,7 +262,7 @@
                 if (!itemstack.func_190926_b()) {
                    ActionResultType actionresulttype2 = this.field_71442_b.func_187101_a(this.field_71439_g, this.field_71441_e, hand);
                    if (actionresulttype2.func_226246_a_()) {
-@@ -1349,6 +1384,8 @@
+@@ -1349,6 +1385,8 @@
           --this.field_71467_ac;
        }
  
@@ -269,7 +271,7 @@
        this.field_71424_I.func_76320_a("gui");
        if (!this.field_71445_n) {
           this.field_71456_v.func_73831_a();
-@@ -1465,6 +1502,8 @@
+@@ -1465,6 +1503,8 @@
        this.field_71424_I.func_219895_b("keyboard");
        this.field_195559_v.func_204870_b();
        this.field_71424_I.func_76319_b();
@@ -278,7 +280,7 @@
     }
  
     private void func_184117_aA() {
-@@ -1676,6 +1715,10 @@
+@@ -1676,6 +1716,10 @@
           this.field_71424_I.func_76320_a("waitForServer");
  
           while(!this.field_71437_Z.func_71200_ad()) {
@@ -289,7 +291,7 @@
              worldloadprogressscreen.func_231023_e_();
              this.func_195542_b(false);
  
-@@ -1696,7 +1739,12 @@
+@@ -1696,7 +1740,12 @@
           networkmanager.func_150719_a(new ClientLoginNetHandler(networkmanager, this, (Screen)null, (p_229998_0_) -> {
           }));
           networkmanager.func_179290_a(new CHandshakePacket(socketaddress.toString(), 0, ProtocolType.LOGIN));
@@ -303,7 +305,7 @@
           this.field_71453_ak = networkmanager;
        } else {
           this.func_241559_a_(p_238195_6_, p_238195_1_, flag, () -> {
-@@ -1770,6 +1818,7 @@
+@@ -1770,6 +1819,7 @@
     }
  
     public void func_71403_a(ClientWorld p_71403_1_) {
@@ -311,7 +313,7 @@
        WorkingScreen workingscreen = new WorkingScreen();
        workingscreen.func_200210_a(new TranslationTextComponent("connect.joining"));
        this.func_213241_c(workingscreen);
-@@ -1801,10 +1850,12 @@
+@@ -1801,10 +1851,12 @@
        IntegratedServer integratedserver = this.field_71437_Z;
        this.field_71437_Z = null;
        this.field_71460_t.func_190564_k();
@@ -324,7 +326,7 @@
           if (integratedserver != null) {
              this.field_71424_I.func_76320_a("waitForServer");
  
-@@ -1819,6 +1870,7 @@
+@@ -1819,6 +1871,7 @@
           this.field_71456_v.func_181029_i();
           this.field_71422_O = null;
           this.field_71455_al = false;
@@ -332,7 +334,7 @@
           this.field_213274_aO.func_216815_b();
        }
  
-@@ -1849,6 +1901,7 @@
+@@ -1849,6 +1902,7 @@
        this.field_71452_i.func_78870_a(p_213257_1_);
        TileEntityRendererDispatcher.field_147556_a.func_147543_a(p_213257_1_);
        this.func_230150_b_();
@@ -340,7 +342,7 @@
     }
  
     public boolean func_238216_r_() {
-@@ -1894,112 +1947,9 @@
+@@ -1894,112 +1948,9 @@
  
     private void func_147112_ai() {
        if (this.field_71476_x != null && this.field_71476_x.func_216346_c() != RayTraceResult.Type.MISS) {
@@ -456,7 +458,7 @@
        }
     }
  
-@@ -2081,6 +2031,7 @@
+@@ -2081,6 +2032,7 @@
        return field_71432_P;
     }
  
@@ -464,7 +466,7 @@
     public CompletableFuture<Void> func_213245_w() {
        return this.func_213169_a(this::func_213237_g).thenCompose((p_229993_0_) -> {
           return p_229993_0_;
-@@ -2388,7 +2339,7 @@
+@@ -2388,7 +2340,7 @@
           supplier = func_228022_c_(supplier);
        }
  
@@ -473,7 +475,7 @@
     }
  
     private static Supplier<IResourcePack> func_228021_b_(Supplier<IResourcePack> p_228021_0_) {
-@@ -2407,6 +2358,14 @@
+@@ -2407,6 +2359,14 @@
        this.field_175617_aL.func_229355_a_(p_228020_1_);
     }
  
diff --git a/patches/minecraft/net/minecraft/client/gui/screen/CreateWorldScreen.java.patch b/patches/minecraft/net/minecraft/client/gui/screen/CreateWorldScreen.java.patch
new file mode 100644
index 000000000..76bb4bb80
--- /dev/null
+++ b/patches/minecraft/net/minecraft/client/gui/screen/CreateWorldScreen.java.patch
@@ -0,0 +1,10 @@
+--- a/net/minecraft/client/gui/screen/CreateWorldScreen.java
++++ b/net/minecraft/client/gui/screen/CreateWorldScreen.java
+@@ -384,6 +384,7 @@
+       if (path != null) {
+          File file1 = path.toFile();
+          ResourcePackList<ResourcePackInfo> resourcepacklist = new ResourcePackList<>(ResourcePackInfo::new, new ServerPackFinder(), new FolderPackFinder(file1, IPackNameDecorator.field_232625_a_));
++         net.minecraftforge.fml.packs.ResourcePackLoader.loadResourcePacks(resourcepacklist, net.minecraftforge.fml.server.ServerLifecycleHooks::buildPackFinder);
+          resourcepacklist.func_198983_a();
+          resourcepacklist.func_198985_a(this.field_238933_b_.func_234884_a_());
+          this.field_230706_i_.func_147108_a(new DataPackScreen(this, resourcepacklist, this::func_241621_a_, file1));
diff --git a/patches/minecraft/net/minecraft/server/MinecraftServer.java.patch b/patches/minecraft/net/minecraft/server/MinecraftServer.java.patch
index 4862e5cc9..22d562f05 100644
--- a/patches/minecraft/net/minecraft/server/MinecraftServer.java.patch
+++ b/patches/minecraft/net/minecraft/server/MinecraftServer.java.patch
@@ -152,15 +152,23 @@
        }, this);
        if (this.func_213162_bc()) {
           this.func_213161_c(completablefuture::isDone);
-@@ -1284,6 +1305,7 @@
+@@ -1284,10 +1305,13 @@
     }
  
     public static DatapackCodec func_240772_a_(ResourcePackList<ResourcePackInfo> p_240772_0_, DatapackCodec p_240772_1_, boolean p_240772_2_) {
 +      net.minecraftforge.fml.packs.ResourcePackLoader.loadResourcePacks(p_240772_0_, net.minecraftforge.fml.server.ServerLifecycleHooks::buildPackFinder);
        p_240772_0_.func_198983_a();
++      DatapackCodec.field_234880_a_.addModPacks(net.minecraftforge.common.ForgeHooks.getModPacks());
++      p_240772_1_.addModPacks(net.minecraftforge.common.ForgeHooks.getModPacks());
        if (p_240772_2_) {
-          p_240772_0_.func_198985_a(Collections.singleton("vanilla"));
-@@ -1437,6 +1459,31 @@
+-         p_240772_0_.func_198985_a(Collections.singleton("vanilla"));
+-         return new DatapackCodec(ImmutableList.of("vanilla"), ImmutableList.of());
++         p_240772_0_.func_198985_a(net.minecraftforge.common.ForgeHooks.getModPacksWithVanilla());
++         return new DatapackCodec(net.minecraftforge.common.ForgeHooks.getModPacksWithVanilla(), ImmutableList.of());
+       } else {
+          Set<String> set = Sets.newLinkedHashSet();
+ 
+@@ -1437,6 +1461,31 @@
  
     public abstract boolean func_213199_b(GameProfile p_213199_1_);
  
@@ -192,7 +200,7 @@
     public void func_223711_a(Path p_223711_1_) throws IOException {
        Path path = p_223711_1_.resolve("levels");
  
-@@ -1564,4 +1611,8 @@
+@@ -1564,4 +1613,8 @@
     public IServerConfiguration func_240793_aU_() {
        return this.field_240768_i_;
     }
diff --git a/patches/minecraft/net/minecraft/util/datafix/codec/DatapackCodec.java.patch b/patches/minecraft/net/minecraft/util/datafix/codec/DatapackCodec.java.patch
new file mode 100644
index 000000000..d0f4c8153
--- /dev/null
+++ b/patches/minecraft/net/minecraft/util/datafix/codec/DatapackCodec.java.patch
@@ -0,0 +1,20 @@
+--- a/net/minecraft/util/datafix/codec/DatapackCodec.java
++++ b/net/minecraft/util/datafix/codec/DatapackCodec.java
+@@ -18,7 +18,7 @@
+    private final List<String> field_234883_d_;
+ 
+    public DatapackCodec(List<String> p_i231607_1_, List<String> p_i231607_2_) {
+-      this.field_234882_c_ = ImmutableList.copyOf(p_i231607_1_);
++      this.field_234882_c_ = com.google.common.collect.Lists.newArrayList(p_i231607_1_);
+       this.field_234883_d_ = ImmutableList.copyOf(p_i231607_2_);
+    }
+ 
+@@ -29,4 +29,8 @@
+    public List<String> func_234887_b_() {
+       return this.field_234883_d_;
+    }
++
++   public void addModPacks(List<String> modPacks) {
++      field_234882_c_.addAll(modPacks.stream().filter(p->!field_234882_c_.contains(p)).collect(java.util.stream.Collectors.toList()));
++   }
+ }
diff --git a/src/main/java/net/minecraftforge/common/ForgeHooks.java b/src/main/java/net/minecraftforge/common/ForgeHooks.java
index e5483aaa9..6d77239d8 100644
--- a/src/main/java/net/minecraftforge/common/ForgeHooks.java
+++ b/src/main/java/net/minecraftforge/common/ForgeHooks.java
@@ -139,6 +139,7 @@ import net.minecraftforge.event.world.BlockEvent;
 import net.minecraftforge.event.world.NoteBlockEvent;
 import net.minecraftforge.eventbus.api.Event.Result;
 import net.minecraftforge.fluids.FluidAttributes;
+import net.minecraftforge.fml.packs.ResourcePackLoader;
 import net.minecraftforge.registries.DataSerializerEntry;
 import net.minecraftforge.registries.ForgeRegistries;
 import net.minecraftforge.registries.ForgeRegistry;
@@ -1231,4 +1232,19 @@ public class ForgeHooks
             locations.stream().map(ResourceLocation::toString).forEach(array::add);
         }
     }
+
+    public static List<String> getModPacks()
+    {
+        List<String> modpacks = ResourcePackLoader.getPackNames();
+        if(modpacks.isEmpty())
+            throw new IllegalStateException("Attempted to retrieve mod packs before they were loaded in!");
+        return modpacks;
+    }
+
+    public static List<String> getModPacksWithVanilla()
+    {
+        List<String> modpacks = getModPacks();
+        modpacks.add("vanilla");
+        return modpacks;
+    }
 }
diff --git a/src/main/java/net/minecraftforge/common/Tags.java b/src/main/java/net/minecraftforge/common/Tags.java
index f53976278..45b421368 100644
--- a/src/main/java/net/minecraftforge/common/Tags.java
+++ b/src/main/java/net/minecraftforge/common/Tags.java
@@ -34,8 +34,16 @@ import net.minecraftforge.registries.IForgeRegistryEntry;
 
 public class Tags
 {
+    public static void init ()
+    {
+        Blocks.init();
+        Items.init();
+    }
+
     public static class Blocks
     {
+        private static void init(){}
+
         public static final ITag.INamedTag<Block> CHESTS = tag("chests");
         public static final ITag.INamedTag<Block> CHESTS_ENDER = tag("chests/ender");
         public static final ITag.INamedTag<Block> CHESTS_TRAPPED = tag("chests/trapped");
@@ -132,6 +140,8 @@ public class Tags
 
     public static class Items
     {
+        private static void init(){}
+
         public static final ITag.INamedTag<Item> ARROWS = tag("arrows");
         public static final ITag.INamedTag<Item> BONES = tag("bones");
         public static final ITag.INamedTag<Item> BOOKSHELVES = tag("bookshelves");
diff --git a/src/main/java/net/minecraftforge/fml/packs/ResourcePackLoader.java b/src/main/java/net/minecraftforge/fml/packs/ResourcePackLoader.java
index d982a9185..35c401d20 100644
--- a/src/main/java/net/minecraftforge/fml/packs/ResourcePackLoader.java
+++ b/src/main/java/net/minecraftforge/fml/packs/ResourcePackLoader.java
@@ -61,6 +61,11 @@ public class ResourcePackLoader
         resourcePacks.addPackFinder(new LambdaFriendlyPackFinder(packFinder.apply(modResourcePacks, ModFileResourcePack::setPackInfo)));
     }
 
+    public static List<String> getPackNames()
+    {
+        return modResourcePacks.values().stream().map(pack -> pack.getPackInfo().getName()).collect(Collectors.toList());
+    }
+
     public static <V> Comparator<Map.Entry<String,V>> getSorter() {
         List<String> order = new ArrayList<>();
         order.add("vanilla");
diff --git a/src/main/java/net/minecraftforge/registries/ForgeRegistries.java b/src/main/java/net/minecraftforge/registries/ForgeRegistries.java
index 39bacf44b..612beea92 100644
--- a/src/main/java/net/minecraftforge/registries/ForgeRegistries.java
+++ b/src/main/java/net/minecraftforge/registries/ForgeRegistries.java
@@ -52,6 +52,7 @@ import net.minecraft.world.gen.foliageplacer.FoliagePlacerType;
 import net.minecraft.world.gen.placement.Placement;
 import net.minecraft.world.gen.surfacebuilders.SurfaceBuilder;
 import net.minecraft.world.gen.treedecorator.TreeDecoratorType;
+import net.minecraftforge.common.Tags;
 import net.minecraftforge.common.loot.GlobalLootModifierSerializer;
 import net.minecraftforge.fml.common.registry.GameRegistry;
 
@@ -114,5 +115,6 @@ public class ForgeRegistries
     {
         GameData.init();
         Bootstrap.register();
+        Tags.init();
     }
 }
diff --git a/src/main/resources/pack.mcmeta b/src/main/resources/pack.mcmeta
index 66a82f62e..dad4aabd1 100644
--- a/src/main/resources/pack.mcmeta
+++ b/src/main/resources/pack.mcmeta
@@ -1,6 +1,6 @@
 {
    "pack": {
-      "pack_format": 4,
+      "pack_format": 5,
       "description": "Forge resource pack"
    }
 }
\ No newline at end of file
diff --git a/src/test/resources/pack.mcmeta b/src/test/resources/pack.mcmeta
index 352b341c5..7d4fb8adb 100644
--- a/src/test/resources/pack.mcmeta
+++ b/src/test/resources/pack.mcmeta
@@ -1,6 +1,6 @@
 {
    "pack": {
-      "pack_format": 4,
+      "pack_format": 5,
       "description": "Forge tests resource pack"
    }
 }
\ No newline at end of file