diff --git a/minecraft/conn.go b/minecraft/conn.go
index ce1cbc39..cc951d67 100644
--- a/minecraft/conn.go
+++ b/minecraft/conn.go
@@ -1046,6 +1046,7 @@ func (conn *Conn) startGame() {
 		LANBroadcastEnabled:          true,
 		PlayerMovementSettings:       data.PlayerMovementSettings,
 		WorldGameMode:                data.WorldGameMode,
+		Hardcore:                     data.Hardcore,
 		ServerAuthoritativeInventory: data.ServerAuthoritativeInventory,
 		PlayerPermissions:            data.PlayerPermissions,
 		Experiments:                  data.Experiments,
@@ -1238,6 +1239,7 @@ func (conn *Conn) handleStartGame(pk *packet.StartGame) error {
 		Items:                        pk.Items,
 		PlayerMovementSettings:       pk.PlayerMovementSettings,
 		WorldGameMode:                pk.WorldGameMode,
+		Hardcore:                     pk.Hardcore,
 		ServerAuthoritativeInventory: pk.ServerAuthoritativeInventory,
 		PlayerPermissions:            pk.PlayerPermissions,
 		ChatRestrictionLevel:         pk.ChatRestrictionLevel,
diff --git a/minecraft/game_data.go b/minecraft/game_data.go
index bedc0134..d05222ab 100644
--- a/minecraft/game_data.go
+++ b/minecraft/game_data.go
@@ -65,6 +65,8 @@ type GameData struct {
 	// WorldGameMode is the game mode that a player gets when it first spawns in the world. It is shown in the
 	// settings and is used if the PlayerGameMode is set to 5.
 	WorldGameMode int32
+	// Hardcore is if the world is in hardcore mode. In hardcore mode, the player cannot respawn after dying.
+	Hardcore bool
 	// GameRules defines game rules currently active with their respective values. The value of these game
 	// rules may be either 'bool', 'int32' or 'float32'. Some game rules are server side only, and don't
 	// necessarily need to be sent to the client.
diff --git a/minecraft/protocol/info.go b/minecraft/protocol/info.go
index e92e91ee..6925a448 100644
--- a/minecraft/protocol/info.go
+++ b/minecraft/protocol/info.go
@@ -2,7 +2,7 @@ package protocol
 
 const (
 	// CurrentProtocol is the current protocol version for the version below.
-	CurrentProtocol = 662
+	CurrentProtocol = 671
 	// CurrentVersion is the current version of Minecraft as supported by the `packet` package.
-	CurrentVersion = "1.20.70"
+	CurrentVersion = "1.20.80"
 )
diff --git a/minecraft/protocol/packet/client_bound_debug_renderer.go b/minecraft/protocol/packet/client_bound_debug_renderer.go
index 23e887f7..537b4318 100644
--- a/minecraft/protocol/packet/client_bound_debug_renderer.go
+++ b/minecraft/protocol/packet/client_bound_debug_renderer.go
@@ -36,7 +36,7 @@ func (*ClientBoundDebugRenderer) ID() uint32 {
 }
 
 func (pk *ClientBoundDebugRenderer) Marshal(io protocol.IO) {
-	io.Varuint32(&pk.Type)
+	io.Uint32(&pk.Type)
 	if pk.Type == ClientBoundDebugRendererAddCube {
 		io.String(&pk.Text)
 		io.Vec3(&pk.Position)
diff --git a/minecraft/protocol/packet/correct_player_move_prediction.go b/minecraft/protocol/packet/correct_player_move_prediction.go
index d9344a7d..8a15cc7e 100644
--- a/minecraft/protocol/packet/correct_player_move_prediction.go
+++ b/minecraft/protocol/packet/correct_player_move_prediction.go
@@ -14,18 +14,21 @@ const (
 // is set to AuthoritativeMovementModeServerWithRewind. The packet is used to correct movement at a specific
 // point in time.
 type CorrectPlayerMovePrediction struct {
+	// PredictionType is the type of prediction that was corrected. It is one of the constants above.
+	PredictionType byte
 	// Position is the position that the player is supposed to be at the tick written in the field below.
 	// The client will change its current position based on movement after that tick starting from the
 	// Position.
 	Position mgl32.Vec3
 	// Delta is the change in position compared to what the client sent as its position at that specific tick.
 	Delta mgl32.Vec3
+	// Rotation is the rotation of the player at the tick written in the field below. It is only included if
+	// PredictionType is PredictionTypeVehicle.
+	Rotation mgl32.Vec2
 	// OnGround specifies if the player was on the ground at the time of the tick below.
 	OnGround bool
 	// Tick is the tick of the movement which was corrected by this packet.
 	Tick uint64
-	// PredictionType is the type of prediction that was corrected. It is one of the constants above.
-	PredictionType byte
 }
 
 // ID ...
@@ -34,9 +37,12 @@ func (*CorrectPlayerMovePrediction) ID() uint32 {
 }
 
 func (pk *CorrectPlayerMovePrediction) Marshal(io protocol.IO) {
+	io.Uint8(&pk.PredictionType)
 	io.Vec3(&pk.Position)
 	io.Vec3(&pk.Delta)
+	if pk.PredictionType == PredictionTypeVehicle {
+		io.Vec2(&pk.Rotation)
+	}
 	io.Bool(&pk.OnGround)
 	io.Varuint64(&pk.Tick)
-	io.Uint8(&pk.PredictionType)
 }
diff --git a/minecraft/protocol/packet/player_auth_input.go b/minecraft/protocol/packet/player_auth_input.go
index 16d5f055..bfd71aa4 100644
--- a/minecraft/protocol/packet/player_auth_input.go
+++ b/minecraft/protocol/packet/player_auth_input.go
@@ -107,7 +107,7 @@ type PlayerAuthInput struct {
 	PlayMode uint32
 	// InteractionModel is a constant representing the interaction model the player is using. It is one of the
 	// constants that may be found above.
-	InteractionModel int32
+	InteractionModel uint32
 	// GazeDirection is the direction in which the player is gazing, when the PlayMode is PlayModeReality: In
 	// other words, when the player is playing in virtual reality.
 	GazeDirection mgl32.Vec3
@@ -146,7 +146,7 @@ func (pk *PlayerAuthInput) Marshal(io protocol.IO) {
 	io.Varuint64(&pk.InputData)
 	io.Varuint32(&pk.InputMode)
 	io.Varuint32(&pk.PlayMode)
-	io.Varint32(&pk.InteractionModel)
+	io.Varuint32(&pk.InteractionModel)
 	if pk.PlayMode == PlayModeReality {
 		io.Vec3(&pk.GazeDirection)
 	}
diff --git a/minecraft/protocol/packet/resource_pack_stack.go b/minecraft/protocol/packet/resource_pack_stack.go
index d2a6dc7f..bbe3fa11 100644
--- a/minecraft/protocol/packet/resource_pack_stack.go
+++ b/minecraft/protocol/packet/resource_pack_stack.go
@@ -27,6 +27,9 @@ type ResourcePackStack struct {
 	// ExperimentsPreviouslyToggled specifies if any experiments were previously toggled in this world. It is
 	// probably used for some kind of metrics.
 	ExperimentsPreviouslyToggled bool
+	// IncludeEditorPacks specifies if vanilla editor packs should be included in the resource pack stack when
+	// connecting to an editor world.
+	IncludeEditorPacks bool
 }
 
 // ID ...
@@ -41,4 +44,5 @@ func (pk *ResourcePackStack) Marshal(io protocol.IO) {
 	io.String(&pk.BaseGameVersion)
 	protocol.SliceUint32Length(io, &pk.Experiments)
 	io.Bool(&pk.ExperimentsPreviouslyToggled)
+	io.Bool(&pk.IncludeEditorPacks)
 }
diff --git a/minecraft/protocol/packet/start_game.go b/minecraft/protocol/packet/start_game.go
index 61c5d7ba..eeb6d70c 100644
--- a/minecraft/protocol/packet/start_game.go
+++ b/minecraft/protocol/packet/start_game.go
@@ -68,6 +68,8 @@ type StartGame struct {
 	// WorldGameMode is the game mode that a player gets when it first spawns in the world. It is shown in the
 	// settings and is used if the PlayerGameMode is set to 5.
 	WorldGameMode int32
+	// Hardcore is if the world is in hardcore mode. In hardcore mode, the player cannot respawn after dying.
+	Hardcore bool
 	// Difficulty is the difficulty of the world. It is a value from 0-3, with 0 being peaceful, 1 being easy,
 	// 2 being normal and 3 being hard.
 	Difficulty int32
@@ -265,6 +267,7 @@ func (pk *StartGame) Marshal(io protocol.IO) {
 	io.Varint32(&pk.Dimension)
 	io.Varint32(&pk.Generator)
 	io.Varint32(&pk.WorldGameMode)
+	io.Bool(&pk.Hardcore)
 	io.Varint32(&pk.Difficulty)
 	io.UBlockPos(&pk.WorldSpawn)
 	io.Bool(&pk.AchievementsDisabled)
diff --git a/minecraft/protocol/packet/update_block_synced.go b/minecraft/protocol/packet/update_block_synced.go
index 70f9fcb2..863327da 100644
--- a/minecraft/protocol/packet/update_block_synced.go
+++ b/minecraft/protocol/packet/update_block_synced.go
@@ -28,7 +28,7 @@ type UpdateBlockSynced struct {
 	// entity transitions from.
 	// Note that for both possible values for TransitionType, the EntityUniqueID should point to the falling
 	// block entity involved.
-	EntityUniqueID int64
+	EntityUniqueID uint64
 	// TransitionType is the type of the transition that happened. It is either BlockToEntityTransition, when
 	// a block placed becomes a falling entity, or EntityToBlockTransition, when a falling entity hits the
 	// ground and becomes a solid block again.
@@ -45,6 +45,6 @@ func (pk *UpdateBlockSynced) Marshal(io protocol.IO) {
 	io.Varuint32(&pk.NewBlockRuntimeID)
 	io.Varuint32(&pk.Flags)
 	io.Varuint32(&pk.Layer)
-	io.Varint64(&pk.EntityUniqueID)
+	io.Varuint64(&pk.EntityUniqueID)
 	io.Varuint64(&pk.TransitionType)
 }
diff --git a/minecraft/protocol/packet/update_player_game_type.go b/minecraft/protocol/packet/update_player_game_type.go
index 12b2f7ae..4fa1a9dd 100644
--- a/minecraft/protocol/packet/update_player_game_type.go
+++ b/minecraft/protocol/packet/update_player_game_type.go
@@ -14,6 +14,8 @@ type UpdatePlayerGameType struct {
 	// PlayerUniqueID is the entity unique ID of the player that should have its game mode updated. If this
 	// packet is sent to other clients with the player unique ID of another player, nothing happens.
 	PlayerUniqueID int64
+	// Tick is the server tick at which the packet was sent. It is used in relation to CorrectPlayerMovePrediction.
+	Tick uint64
 }
 
 // ID ...
@@ -24,4 +26,5 @@ func (*UpdatePlayerGameType) ID() uint32 {
 func (pk *UpdatePlayerGameType) Marshal(io protocol.IO) {
 	io.Varint32(&pk.GameType)
 	io.Varint64(&pk.PlayerUniqueID)
+	io.Varuint64(&pk.Tick)
 }
diff --git a/minecraft/protocol/recipe.go b/minecraft/protocol/recipe.go
index ceba5953..762afd4c 100644
--- a/minecraft/protocol/recipe.go
+++ b/minecraft/protocol/recipe.go
@@ -205,6 +205,9 @@ type ShapedRecipe struct {
 	Block string
 	// Priority ...
 	Priority int32
+	// AssumeSymmetry specifies if the recipe is symmetrical. If this is set to true, the recipe will be
+	// mirrored along the diagonal axis. This means that the recipe will be the same if rotated 180 degrees.
+	AssumeSymmetry bool
 	// RecipeNetworkID is a unique ID used to identify the recipe over network. Each recipe must have a unique
 	// network ID. Recommended is to just increment a variable for each unique recipe registered.
 	// This field must never be 0.
@@ -436,6 +439,7 @@ func marshalShaped(r IO, recipe *ShapedRecipe) {
 	r.UUID(&recipe.UUID)
 	r.String(&recipe.Block)
 	r.Varint32(&recipe.Priority)
+	r.Bool(&recipe.AssumeSymmetry)
 	r.Varuint32(&recipe.RecipeNetworkID)
 }