diff --git a/mappings/net/minecraft/client/gui/SplashScreen.mapping b/mappings/net/minecraft/client/gui/SplashScreen.mapping
index ce6da9d365..e35f513c45 100644
--- a/mappings/net/minecraft/client/gui/SplashScreen.mapping
+++ b/mappings/net/minecraft/client/gui/SplashScreen.mapping
@@ -1,2 +1,10 @@
 CLASS cuf net/minecraft/client/gui/SplashScreen
 	FIELD a LOGO Lqd;
+	FIELD g splashScreenConsumer Ljava/util/function/Consumer;
+	METHOD a renderProgressBar (IIIIFF)V
+		ARG 1 minX
+		ARG 2 minY
+		ARG 3 maxX
+		ARG 4 maxY
+		ARG 5 progress
+		ARG 6 fadeAmount
diff --git a/mappings/net/minecraft/client/gui/menu/NewLevelScreen.mapping b/mappings/net/minecraft/client/gui/menu/NewLevelScreen.mapping
index ba988c5bbe..4bb6de22e9 100644
--- a/mappings/net/minecraft/client/gui/menu/NewLevelScreen.mapping
+++ b/mappings/net/minecraft/client/gui/menu/NewLevelScreen.mapping
@@ -1,4 +1,5 @@
 CLASS cxx net/minecraft/client/gui/menu/NewLevelScreen
+	FIELD B buttonCreateLevel Lcre;
 	FIELD C buttonGameModeSwitch Lcre;
 	FIELD D buttonMoreOptions Lcre;
 	FIELD E buttonGenerateStructures Lcre;
@@ -11,6 +12,13 @@ CLASS cxx net/minecraft/client/gui/menu/NewLevelScreen
 	FIELD N generatorType I
 	FIELD O INVALID_LEVEL_NAMES [Ljava/lang/String;
 	FIELD f parent Lcun;
+	FIELD g textFieldLevelName Lcri;
+	FIELD h textFieldSeed Lcri;
 	FIELD s gameMode Ljava/lang/String;
 	FIELD u structures Z
 	FIELD v commandsAllowed Z
+	FIELD x enableBonusItems Z
+	FIELD z isCreatingLevel Z
+	METHOD a recreateLevel (Lcjf;)V
+	METHOD a sanitizeLevelName (Lcji;Ljava/lang/String;)Ljava/lang/String;
+	METHOD j createLevel ()V
diff --git a/mappings/net/minecraft/client/resource/ResourceLoadProgressProvider.mapping b/mappings/net/minecraft/client/resource/ResourceLoadProgressProvider.mapping
new file mode 100644
index 0000000000..4534cc88b1
--- /dev/null
+++ b/mappings/net/minecraft/client/resource/ResourceLoadProgressProvider.mapping
@@ -0,0 +1,4 @@
+CLASS wn net/minecraft/client/resource/ResourceLoadProgressProvider
+	METHOD e getStatus ()Lwo;
+	METHOD g getTotal ()I
+	METHOD h getProgress ()I
diff --git a/mappings/net/minecraft/server/world/ServerWorld.mapping b/mappings/net/minecraft/server/world/ServerWorld.mapping
index af3da4cde7..96cf9959c0 100644
--- a/mappings/net/minecraft/server/world/ServerWorld.mapping
+++ b/mappings/net/minecraft/server/world/ServerWorld.mapping
@@ -25,6 +25,7 @@ CLASS ur net/minecraft/server/world/ServerWorld
 		ARG 2 z
 		ARG 3 force
 	METHOD d getScoreboard ()Lqs;
+	METHOD l placeBonusChest ()V
 	METHOD m_ tickScheduledTicks ()V
 	METHOD n saveLevel ()V
 	METHOD n_ getForcedSpawnPoint ()Let;