diff --git a/latest version/api/api_code.py b/latest version/api/api_code.py
index bf7a807..2a59e37 100644
--- a/latest version/api/api_code.py	
+++ b/latest version/api/api_code.py	
@@ -32,6 +32,7 @@ CODE_MSG = {
     -210: 'Username exists',
     -211: 'Email address exists',
     -212: 'User code exists',
+    -213: 'Too many register attempts',
     -999: 'Unknown error'
 }
 
diff --git a/latest version/core/config_manager.py b/latest version/core/config_manager.py
index 504832f..5b2aaab 100644
--- a/latest version/core/config_manager.py	
+++ b/latest version/core/config_manager.py	
@@ -100,6 +100,8 @@ class Config:
 
     GAME_LOGIN_RATE_LIMIT = '30/5 minutes'
     API_LOGIN_RATE_LIMIT = '10/5 minutes'
+    GAME_REGISTER_IP_RATE_LIMIT = '10/1 day'
+    GAME_REGISTER_DEVICE_RATE_LIMIT = '3/1 day'
 
 
     NOTIFICATION_EXPIRE_TIME = 3 * 60 * 1000
diff --git a/latest version/core/constant.py b/latest version/core/constant.py
index ff066de..113ce59 100644
--- a/latest version/core/constant.py	
+++ b/latest version/core/constant.py	
@@ -1,6 +1,6 @@
 from .config_manager import Config
 
-ARCAEA_SERVER_VERSION = 'v2.11.3.19'
+ARCAEA_SERVER_VERSION = 'v2.11.3.20'
 ARCAEA_DATABASE_VERSION = 'v2.11.3.19'
 ARCAEA_LOG_DATBASE_VERSION = 'v1.1'
 
diff --git a/latest version/core/score.py b/latest version/core/score.py
index 095409b..5b030c8 100644
--- a/latest version/core/score.py	
+++ b/latest version/core/score.py	
@@ -131,7 +131,7 @@ class Score:
         # 谱面定数小于等于 0 视为 unranked，返回值会为 0
         if not defnum or defnum <= 0:
             return 0
-        
+
         all_note = perfect_count + near_count + miss_count
         if all_note == 0:
             return 0
@@ -281,7 +281,8 @@ class UserPlay(UserScore):
         if songfile_hash and songfile_hash != self.song_hash:
             return False
 
-        x = f'''{self.song_token}{self.song_hash}{self.song.song_id}{self.song.difficulty}{self.score}{self.shiny_perfect_count}{self.perfect_count}{self.near_count}{self.miss_count}{self.health}{self.modifier}{self.clear_type}'''
+        x = f'''{self.song_token}{self.song_hash}{self.song.song_id}{self.song.difficulty}{self.score}{self.shiny_perfect_count}{
+            self.perfect_count}{self.near_count}{self.miss_count}{self.health}{self.modifier}{self.clear_type}'''
         if self.combo_interval_bonus is not None:
             if self.combo_interval_bonus < 0 or self.combo_interval_bonus > self.all_note_count / 150:
                 return False
@@ -569,6 +570,18 @@ class Potential:
                        (self.user.user_id, r_index, user_score.time_played, user_score.song.song_id, user_score.song.difficulty,
                         user_score.score, user_score.shiny_perfect_count, user_score.perfect_count, user_score.near_count, user_score.miss_count, user_score.health, user_score.modifier, user_score.clear_type, user_score.rating))
 
+        # 更新内存中的数据
+        x = (r_index, user_score.song.song_id,
+             user_score.song.difficulty, user_score.rating)
+        if len(self.r30_tuples) < 30:
+            self.r30_tuples.append(x)
+            return
+
+        for i in range(30):
+            if self.r30_tuples[i][0] == r_index:
+                self.r30_tuples[i] = x
+                break
+
     def r30_push_score(self, user_score: 'UserPlay | UserScore') -> None:
         '''根据新成绩调整 r30'''
         if self.r30_tuples is None:
diff --git a/latest version/core/user.py b/latest version/core/user.py
index b7aec10..ae168a0 100644
--- a/latest version/core/user.py	
+++ b/latest version/core/user.py	
@@ -54,6 +54,12 @@ class User:
 
 
 class UserRegister(User):
+
+    limiter_ip = ArcLimiter(
+        Config.GAME_REGISTER_IP_RATE_LIMIT, 'game_register_ip')
+    limiter_device = ArcLimiter(
+        Config.GAME_REGISTER_DEVICE_RATE_LIMIT, 'game_register_device')
+
     def __init__(self, c) -> None:
         super().__init__()
         self.c = c
@@ -141,7 +147,13 @@ class UserRegister(User):
                 self.c.execute('''insert or replace into user_char_full values(?,?,?,?,?,?,0)''',
                                (self.user_id, i[0], i[1], exp, i[2], 0))
 
-    def register(self):
+    def register(self, device_id: str = None, ip: str = None):
+        if device_id is not None and not self.limiter_device.hit(device_id):
+            raise RateLimit(f'''Too many register attempts of device `{
+                            device_id}`''', 124, -213)
+        if ip is not None and ip != '127.0.0.1' and not self.limiter_ip.hit(ip):
+            raise RateLimit(f'''Too many register attempts of ip `{
+                            ip}`''', 124, -213)
         now = int(time.time() * 1000)
         if self.user_code is None:
             self._build_user_code()
diff --git a/latest version/server/user.py b/latest version/server/user.py
index 123c673..9a08fcc 100644
--- a/latest version/server/user.py	
+++ b/latest version/server/user.py	
@@ -32,12 +32,12 @@ def register():
         else:
             device_id = 'low_version'
 
-        new_user.register()
+        ip = request.remote_addr
+        new_user.register(device_id, ip)
 
         # 注册后自动登录
         user = UserLogin(c)
-        user.login(new_user.name, new_user.password,
-                   device_id, request.remote_addr)
+        user.login(new_user.name, new_user.password, device_id, ip)
         current_app.logger.info(f'New user `{user.user_id}` registered')
         return success_return({'user_id': user.user_id, 'access_token': user.token})