diff --git a/src/main/java/leets/land/UpdownApplication.java b/src/main/java/leets/land/UpdownApplication.java
index 09d7ae5..560e3cb 100644
--- a/src/main/java/leets/land/UpdownApplication.java
+++ b/src/main/java/leets/land/UpdownApplication.java
@@ -1,8 +1,11 @@
 package leets.land;
 
+import leets.land.controller.GameController;
+
 public class UpdownApplication {
 
 	public static void main(String[] args) {
-		System.out.print("hihi :D");
+		GameController gameController = new GameController();
+		gameController.startGame();
 	}
 }
diff --git a/src/main/java/leets/land/controller/GameController.java b/src/main/java/leets/land/controller/GameController.java
new file mode 100644
index 0000000..f7673d4
--- /dev/null
+++ b/src/main/java/leets/land/controller/GameController.java
@@ -0,0 +1,37 @@
+package leets.land.controller;
+
+import leets.land.model.Game;
+import leets.land.view.InputView;
+import leets.land.view.OutputView;
+
+public class GameController {
+    private Game game;
+    private InputView inputView;
+    private OutputView outputView;
+
+    public GameController() {
+        this.game = new Game();
+        this.inputView = new InputView();
+        this.outputView = new OutputView();
+    }
+
+    public void startGame() {
+        outputView.displayWelcomeMessage();
+        int gameType = inputView.promptForGameType();
+        game.initializeGame(gameType);
+
+        while (!game.isGameOver()) {
+            String range = game.getCurrentRange();
+            outputView.displayPrompt("값을 입력해주세요 " + range + " : ");
+            String guess = inputView.promptForGuess();
+            if (!game.isValidGuess(guess)) {
+                outputView.displayError("범위 내의 올바른 값을 입력하세요.");
+                continue;
+            }
+            game.processGuess(guess); // 변경된 부분
+            if (game.isGameOver()) {
+                outputView.displayGameOverMessage(game.getGuessCount());
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/leets/land/model/Game.java b/src/main/java/leets/land/model/Game.java
new file mode 100644
index 0000000..1872f90
--- /dev/null
+++ b/src/main/java/leets/land/model/Game.java
@@ -0,0 +1,114 @@
+package leets.land.model;
+
+import java.util.Random;
+
+public class Game {
+    private int targetNumber;
+    private char targetLetter;
+    private int minNumber = 1;
+    private int maxNumber = 100;
+    private char minLetter = 'A';
+    private char maxLetter = 'Z';
+    private int guessCount = 0;
+    private boolean gameOver = false;
+    private int gameType;
+
+    public void initializeGame(int gameType) {
+        this.gameType = gameType;
+        Random rand = new Random();
+        if (gameType == 1) {
+            targetNumber = rand.nextInt(maxNumber - minNumber + 1) + minNumber;
+        } else {
+            minLetter = 'A';
+            maxLetter = 'z';
+            targetLetter = (char) (rand.nextInt('z' - 'A' + 1) + 'A');
+        }
+    }
+
+    public boolean isValidGuess(String guess) {
+        if (gameType == 1) {
+            try {
+                int guessNum = Integer.parseInt(guess);
+                return guessNum >= minNumber && guessNum <= maxNumber;
+            } catch (NumberFormatException e) {
+                return false;
+            }
+        } else {
+            if (guess.length() != 1) return false;
+            char guessChar = guess.charAt(0);
+            return (guessChar >= minLetter && guessChar <= maxLetter) ||
+                    (guessChar >= Character.toLowerCase(minLetter) && guessChar <= Character.toLowerCase(maxLetter));
+        }
+    }
+
+    public void processGuess(String guess) {
+        guessCount++;
+        if (gameType == 1) {
+            int guessNum;
+            try {
+                guessNum = Integer.parseInt(guess);
+            } catch (NumberFormatException e) {
+                System.out.println("[ERROR] 정수 값을 입력하세요.");
+                return;
+            }
+
+            if (guessNum < targetNumber) {
+                minNumber = guessNum + 1;
+                System.out.println("UP");
+            } else if (guessNum > targetNumber) {
+                maxNumber = guessNum - 1;
+                System.out.println("DOWN");
+            } else {
+                gameOver = true;
+                System.out.println("정답!");
+            }
+        } else {
+            char guessChar = guess.charAt(0);
+            if (guessChar >= 'A' && guessChar <= 'Z') {
+                if (guessChar < targetLetter) {
+                    minLetter = (char) (guessChar + 1);
+                    System.out.println("UP");
+                } else if (guessChar > targetLetter) {
+                    maxLetter = (char) (guessChar - 1);
+                    System.out.println("DOWN");
+                } else {
+                    gameOver = true;
+                }
+            } else if (guessChar >= 'a' && guessChar <= 'z') {
+                if (guessChar < targetLetter) {
+                    minLetter = (char) (guessChar + 1);
+                    System.out.println("UP");
+                } else if (guessChar > targetLetter) {
+                    maxLetter = (char) (guessChar - 1);
+                    System.out.println("DOWN");
+                } else {
+                    gameOver = true;
+                }
+            } else {
+                System.out.println("[ERROR] 범위 내의 올바른 값을 입력하세요.");
+            }
+
+            if (maxLetter >= '[' && maxLetter <= '`') {
+                maxLetter = 'Z';
+            } else if (minLetter > 'Z' && minLetter < 'a') {
+                minLetter = 'a';
+            }
+        }
+    }
+
+    public boolean isGameOver() {
+        return this.gameOver;
+    }
+
+    public int getGuessCount() {
+        return this.guessCount;
+    }
+
+    public String getCurrentRange() {
+        if (gameType == 1) {
+            return String.format("(%d ~ %d)", minNumber, maxNumber);
+        } else {
+            return String.format("(%c ~ %c)", minLetter, maxLetter);
+        }
+    }
+}
diff --git a/src/main/java/leets/land/view/InputView.java b/src/main/java/leets/land/view/InputView.java
new file mode 100644
index 0000000..483b648
--- /dev/null
+++ b/src/main/java/leets/land/view/InputView.java
@@ -0,0 +1,20 @@
+package leets.land.view;
+
+import java.util.Scanner;
+
+public class InputView {
+    private Scanner scanner;
+
+    public InputView() {
+        this.scanner = new Scanner(System.in);
+    }
+
+    public int promptForGameType() {
+        System.out.print("버전을 입력해주세요 (숫자 버전: 1, 영어 버전: 2) : ");
+        return scanner.nextInt();
+    }
+
+    public String promptForGuess() {
+        return scanner.next();
+    }
+}
diff --git a/src/main/java/leets/land/view/OutputView.java b/src/main/java/leets/land/view/OutputView.java
new file mode 100644
index 0000000..222ddbe
--- /dev/null
+++ b/src/main/java/leets/land/view/OutputView.java
@@ -0,0 +1,25 @@
+package leets.land.view;
+
+public class OutputView {
+    public void displayWelcomeMessage() {
+        System.out.println("업다운 게임을 시작합니다.");
+    }
+
+    public void displayPrompt(String message) {
+        System.out.print(message);
+    }
+
+    public void displayFeedback(String feedback) {
+        System.out.println(feedback);
+    }
+
+    public void displayError(String errorMessage) {
+        System.out.println("[ERROR] " + errorMessage);
+    }
+
+
+    public void displayGameOverMessage(int guessCount) {
+        System.out.println("정답!\n");
+        System.out.println("시도한 횟수 : " + guessCount + "회");
+    }
+}
\ No newline at end of file