diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/WorldInfoPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/WorldInfoPage.java
index 58facec73..34d109304 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/WorldInfoPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/WorldInfoPage.java
@@ -361,14 +361,27 @@ public final class WorldInfoPage extends SpinnerPane {
                 playerGameTypePane.setRight(gameTypeBox);
 
                 Tag tag = player.get("playerGameType");
+                Tag hardcoreTag = dataTag.get("hardcore");
+                boolean isHardcore = hardcoreTag instanceof ByteTag && ((ByteTag) hardcoreTag).getValue() == 1;
+
                 if (tag instanceof IntTag) {
                     IntTag intTag = (IntTag) tag;
-                    GameType gameType = GameType.of(intTag.getValue());
+                    GameType gameType = GameType.of(intTag.getValue(), isHardcore);
                     if (gameType != null) {
                         gameTypeBox.setValue(gameType);
                         gameTypeBox.valueProperty().addListener((o, oldValue, newValue) -> {
                             if (newValue != null) {
-                                intTag.setValue(newValue.ordinal());
+                                if (newValue == GameType.HARDCORE) {
+                                    intTag.setValue(0); // survival (hardcore worlds are survival+hardcore flag)
+                                    if (hardcoreTag instanceof ByteTag) {
+                                        ((ByteTag) hardcoreTag).setValue((byte) 1);
+                                    }
+                                } else {
+                                    intTag.setValue(newValue.ordinal());
+                                    if (hardcoreTag instanceof ByteTag) {
+                                        ((ByteTag) hardcoreTag).setValue((byte) 0);
+                                    }
+                                }
                                 saveLevelDat();
                             }
                         });
@@ -606,12 +619,13 @@ public final class WorldInfoPage extends SpinnerPane {
     }
 
     private enum GameType {
-        SURVIVAL, CREATIVE, ADVENTURE, SPECTATOR;
+        SURVIVAL, CREATIVE, ADVENTURE, SPECTATOR, HARDCORE;
 
         static final ObservableList<GameType> items = FXCollections.observableList(Arrays.asList(values()));
 
-        static GameType of(int d) {
-            return d >= 0 && d <= items.size() ? items.get(d) : null;
+        static GameType of(int d, boolean hardcore) {
+            if (hardcore && d == 0) return HARDCORE; // hardcore + survival
+            return d >= 0 && d < 4 ? items.get(d) : null;
         }
 
         @Override
diff --git a/HMCL/src/main/resources/assets/lang/I18N.properties b/HMCL/src/main/resources/assets/lang/I18N.properties
index 9f8b80f95..4f8ff362d 100644
--- a/HMCL/src/main/resources/assets/lang/I18N.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N.properties
@@ -1140,6 +1140,7 @@ world.info.player.food_level=Hunger Level
 world.info.player.game_type=Game Mode
 world.info.player.game_type.adventure=Adventure
 world.info.player.game_type.creative=Creative
+world.info.player.game_type.hardcore=Hardcore
 world.info.player.game_type.spectator=Spectator
 world.info.player.game_type.survival=Survival
 world.info.player.health=Health
diff --git a/HMCL/src/main/resources/assets/lang/I18N_zh.properties b/HMCL/src/main/resources/assets/lang/I18N_zh.properties
index 266e9a199..eb2b63aa4 100644
--- a/HMCL/src/main/resources/assets/lang/I18N_zh.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N_zh.properties
@@ -945,6 +945,7 @@ world.info.player.food_level=饑餓值
 world.info.player.game_type=遊戲模式
 world.info.player.game_type.adventure=冒險
 world.info.player.game_type.creative=創造
+world.info.player.game_type.hardcore=極限
 world.info.player.game_type.spectator=旁觀者
 world.info.player.game_type.survival=生存
 world.info.player.health=生命值
diff --git a/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties b/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties
index 5800684d8..5b6a11b01 100644
--- a/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties
@@ -956,6 +956,7 @@ world.info.player.food_level=饥饿值
 world.info.player.game_type=游戏模式
 world.info.player.game_type.adventure=冒险
 world.info.player.game_type.creative=创造
+world.info.player.game_type.hardcore=极限
 world.info.player.game_type.spectator=旁观者
 world.info.player.game_type.survival=生存
 world.info.player.health=生命值