diff --git a/game/builtin/world.go b/game/builtin/world.go
index 7335e37..a699480 100644
--- a/game/builtin/world.go
+++ b/game/builtin/world.go
@@ -8,6 +8,7 @@ import (
 	"sync/atomic"
 )
 
+// NewWorld 创建一个内置的游戏世界
 func NewWorld[PlayerID comparable, Player game.Player[PlayerID]](guid int64, options ...WorldOption[PlayerID, Player]) *World[PlayerID, Player] {
 	world := &World[PlayerID, Player]{
 		guid:         guid,
@@ -23,6 +24,7 @@ func NewWorld[PlayerID comparable, Player game.Player[PlayerID]](guid int64, opt
 	return world
 }
 
+// World 游戏世界的内置实现，实现了基本的游戏世界接口
 type World[PlayerID comparable, Player game.Player[PlayerID]] struct {
 	guid         int64
 	actorGuid    atomic.Int64
diff --git a/game/builtin/world_errors.go b/game/builtin/world_errors.go
index 15c1487..3f7889c 100644
--- a/game/builtin/world_errors.go
+++ b/game/builtin/world_errors.go
@@ -3,6 +3,6 @@ package builtin
 import "errors"
 
 var (
-	ErrWorldPlayerLimit = errors.New("the number of players in the world has reached the upper limit")
-	ErrWorldReleased    = errors.New("the world has been released")
+	ErrWorldPlayerLimit = errors.New("the number of players in the world has reached the upper limit") // 玩家数量达到上限
+	ErrWorldReleased    = errors.New("the world has been released")                                    // 世界已被释放
 )
diff --git a/game/builtin/world_options.go b/game/builtin/world_options.go
index 739bdd1..096fc7c 100644
--- a/game/builtin/world_options.go
+++ b/game/builtin/world_options.go
@@ -2,8 +2,10 @@ package builtin
 
 import "minotaur/game"
 
+// WorldOption 世界构建可选项
 type WorldOption[PlayerID comparable, Player game.Player[PlayerID]] func(world *World[PlayerID, Player])
 
+// WithWorldPlayerLimit 限制世界的玩家数量上限
 func WithWorldPlayerLimit[PlayerID comparable, Player game.Player[PlayerID]](playerLimit int) WorldOption[PlayerID, Player] {
 	return func(world *World[PlayerID, Player]) {
 		world.playerLimit = playerLimit