diff --git a/src/main/java/leets/land/UpdownApplication.java b/src/main/java/leets/land/UpdownApplication.java
index 09d7ae5..f10dd56 100644
--- a/src/main/java/leets/land/UpdownApplication.java
+++ b/src/main/java/leets/land/UpdownApplication.java
@@ -1,8 +1,17 @@
 package leets.land;
 
+import leets.land.controller.GameController;
+import leets.land.model.GameAlphabetModel;
+import leets.land.model.GameNumericModel;
+import leets.land.view.GameView;
+
 public class UpdownApplication {
 
 	public static void main(String[] args) {
-		System.out.print("hihi :D");
+		GameView view = new GameView();
+		GameNumericModel numericModel = new GameNumericModel();
+		GameAlphabetModel alphabetModel = new GameAlphabetModel();
+		GameController controller = new GameController(view, numericModel, alphabetModel);
+		controller.play();
 	}
 }
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..90960c9
--- /dev/null
+++ b/src/main/java/leets/land/controller/GameController.java
@@ -0,0 +1,67 @@
+package leets.land.controller;
+
+import leets.land.model.GameAlphabetModel;
+import leets.land.model.GameNumericModel;
+import leets.land.view.GameView;
+
+public class GameController {
+
+  private final GameView view;
+  private final GameNumericModel numericModel;
+  private final GameAlphabetModel alphabetModel;
+
+  public GameController(GameView view, GameNumericModel numericModel,
+      GameAlphabetModel alphabetModel) {
+    this.view = view;
+    this.numericModel = numericModel;
+    this.alphabetModel = alphabetModel;
+  }
+
+  public void play() {
+    int version = view.getVersionInput();
+
+    if (version == 1) {
+      numericPlay();
+    } else if (version == 2) {
+      alphabetPlay();
+    } else {
+      System.out.println("[ERROR] 존재하지 않는 버전입니다.");
+      play();
+    }
+  }
+
+  public void numericPlay() {
+
+    int input = view.getNumericInput();
+    while (true) {
+
+      if (numericModel.up(input)) {
+        input = numericModel.changeLimitForUp(input);
+      } else if (numericModel.down(input)) {
+        input = numericModel.changeLimitForDown(input);
+      } else if (numericModel.isCorrect(input)) {
+        System.out.println("정답 !");
+        break;
+      }
+    }
+
+    System.out.println("시도한 횟수 : " + (GameNumericModel.getCount() + 1));
+  }
+
+  public void alphabetPlay() {
+    int input = view.getAlphabetInput();
+    while (true) {
+
+      if (alphabetModel.up(input)) {
+        input = alphabetModel.changeLimitForUp(input);
+      } else if (alphabetModel.down(input)) {
+        input = alphabetModel.changeLimitForDown(input);
+      } else if (alphabetModel.isCorrect(input)) {
+        System.out.println("정답 !");
+        break;
+      }
+    }
+
+    System.out.println("시도한 횟수 : " + (GameAlphabetModel.getCount() + 1));
+  }
+}
diff --git a/src/main/java/leets/land/model/GameAlphabetModel.java b/src/main/java/leets/land/model/GameAlphabetModel.java
new file mode 100644
index 0000000..267e610
--- /dev/null
+++ b/src/main/java/leets/land/model/GameAlphabetModel.java
@@ -0,0 +1,70 @@
+package leets.land.model;
+
+import java.util.Random;
+import java.util.Scanner;
+
+public class GameAlphabetModel {
+
+  private final char answer;
+  private static int count;
+  private char min = 'A';
+  private char max = 'z';
+
+  public GameAlphabetModel() {
+    Random random = new Random();
+    this.answer = (char) (random.nextInt(26) + (random.nextBoolean() ? 'A' : 'a'));
+  }
+
+  public boolean up(int input) {
+    return input < answer;
+  }
+
+  public char changeLimitForUp(int input) {
+    System.out.println("UP");
+    count++;
+
+    min = (char) (input + 1);
+
+    return isValidAlphabetRange();
+  }
+
+  public boolean down(int input) {
+    return input > answer;
+  }
+
+  public char changeLimitForDown(int input) {
+    System.out.println("DOWN");
+    count++;
+
+    if (input == 'a') {
+      max = 'Z';
+    } else {
+      max = (char) (input - 1);
+    }
+
+    return isValidAlphabetRange();
+  }
+
+  public boolean isCorrect(int input) {
+    return input == answer;
+  }
+
+  public static int getCount() {
+    return count;
+  }
+
+  private char isValidAlphabetRange() {
+    Scanner sc = new Scanner(System.in);
+
+    while (true) {
+      System.out.print("영어를 입력해주세요(" + min + " ~ " + max + ") : ");
+      char newInput = sc.next().charAt(0);
+
+      if (newInput < min || newInput > max) {
+        System.out.println("[ERROR] 범위 내의 알파벳을 입력하세요.");
+      } else {
+        return newInput;
+      }
+    }
+  }
+}
diff --git a/src/main/java/leets/land/model/GameNumericModel.java b/src/main/java/leets/land/model/GameNumericModel.java
new file mode 100644
index 0000000..d386817
--- /dev/null
+++ b/src/main/java/leets/land/model/GameNumericModel.java
@@ -0,0 +1,60 @@
+package leets.land.model;
+
+import java.util.Scanner;
+
+public class GameNumericModel {
+
+  private final int answer = (int) (Math.random() * 100) + 1;
+  private static int count;
+  private int min = 1;
+  private int max = 100;
+
+  public boolean up(int input) {
+    return input < answer;
+  }
+
+  public int changeLimitForUp(int input) {
+    System.out.println("UP");
+    count++;
+
+    min = input + 1;
+
+    return isValidNumericRange();
+  }
+
+  public boolean down(int input) {
+    return input > answer;
+  }
+
+  public int changeLimitForDown(int input) {
+    System.out.println("DOWN");
+    count++;
+
+    max = input - 1;
+
+    return isValidNumericRange();
+  }
+
+  public boolean isCorrect(int input) {
+    return input == answer;
+  }
+
+  public static int getCount() {
+    return count;
+  }
+
+  private int isValidNumericRange() {
+    Scanner sc = new Scanner(System.in);
+
+    while (true) {
+      System.out.print("숫자를 입력해주세요(" + min + " ~ " + max + ") : ");
+      int newInput = sc.nextInt();
+
+      if (newInput < min || newInput > max) {
+        System.out.println("[ERROR] 범위 내의 숫자를 입력하세요.");
+      } else {
+        return newInput;
+      }
+    }
+  }
+}
diff --git a/src/main/java/leets/land/view/GameView.java b/src/main/java/leets/land/view/GameView.java
new file mode 100644
index 0000000..489a84f
--- /dev/null
+++ b/src/main/java/leets/land/view/GameView.java
@@ -0,0 +1,24 @@
+package leets.land.view;
+
+import java.util.Scanner;
+
+public class GameView {
+
+  public int getVersionInput() {
+    Scanner sc = new Scanner(System.in);
+    System.out.print("버전을 입력해주세요 (숫자 버전: 1, 영어 버전: 2) : ");
+    return sc.nextInt();
+  }
+
+  public int getNumericInput() {
+    Scanner sc = new Scanner(System.in);
+    System.out.print("숫자를 입력해주세요(1 ~ 100) : ");
+    return sc.nextInt();
+  }
+
+  public char getAlphabetInput() {
+    Scanner sc = new Scanner(System.in);
+    System.out.print("영어를 입력해주세요(A ~ z) : ");
+    return sc.next().charAt(0);
+  }
+}