diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000000..5008ddfcf5
Binary files /dev/null and b/.DS_Store differ
diff --git a/docs/README.md b/docs/README.md
index e69de29bb2..5cc24ace0d 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -0,0 +1,51 @@
+## 📌 구조
+- computer
+- player
+- game
+- baseball_number
+- end_number
+- answer
+
+
+## 📌 시나리오
+1. 숫자 야구 게임을 시작한다.
+2. 플레이어가 컴퓨터에 숫자를 입력한다.
+3. 컴퓨터가 입력한 숫자에 대한 결과를 플레이어에게 보여준다.
+4. 컴퓨터가 게임 종료 여부를 묻는다.  
+   4-a. 게임을 종료한다.  
+   4-b. 게임을 재시작한다.
+
+### 에러 발생
+2a. 플레이어 숫자가 아닌 다른 값을 입력한다.   
+2b. 플레이어 숫자를 입력하지만, 3자리가 아닌값을 입력한다.  
+2c. 플레이어 중복된 숫자를 입력한다.
+
+4a. 플레이어 숫자가 아닌 다른 값을 입력한다.  
+4b. 플레이어 숫자를 입력하지만, 1자리가 아닌값을 입력한다.
+
+---
+
+## 🤔기능
+1. player(view)
+- [ ] 숫자를 입력하라
+- [ ] 게임종료 여부를 말해라
+
+2. game
+- [ ] 게임을 시작해라
+- [ ] 게임을 종료하라
+- [ ] 플레이어의 입력에 대한 결과를 제공해라
+
+3. computer
+- [ ] 정답 숫자를 만들어라
+- [ ] 플레이어의 입력에 대한 결과를 제공해라
+
+4. baseball_number
+- [ ] 숫자를 검증하라
+
+5. answer
+- [ ] baseball_number를 계산하라
+- [ ] 출력할 문자열을 만들어라
+
+6. end_number
+- [ ] 숫자를 검증하라
+- [ ] game을 종료할지 결정하라
\ No newline at end of file
diff --git a/src/main/java/baseball/Application.java b/src/main/java/baseball/Application.java
index dd95a34214..b9712012c4 100644
--- a/src/main/java/baseball/Application.java
+++ b/src/main/java/baseball/Application.java
@@ -1,7 +1,15 @@
 package baseball;
 
+import baseball.game.Game;
+
 public class Application {
     public static void main(String[] args) {
         // TODO: 프로그램 구현
+        boolean end = false;
+        do {
+            Game game = new Game();
+            game.start();
+            end = game.end();
+        } while (!end);
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/baseball/domain/Answer.java b/src/main/java/baseball/domain/Answer.java
new file mode 100644
index 0000000000..3081663a26
--- /dev/null
+++ b/src/main/java/baseball/domain/Answer.java
@@ -0,0 +1,48 @@
+package baseball.domain;
+
+import java.util.List;
+import java.util.stream.IntStream;
+
+public class Answer {
+    private enum AnswerStatus {RIGHT, WRONG}
+
+    private AnswerStatus status = AnswerStatus.WRONG;
+    private final Long strike;
+    private final Long ball;
+
+    public Answer(List<Integer> answerNumbers, List<Integer> playerNumbers) {
+        strike = countStrike(answerNumbers, playerNumbers);
+        ball = countContain(answerNumbers, playerNumbers) - strike;
+        if (Long.valueOf(BaseballNumber.BASEBALL_LENGTH).equals(strike)) {
+            this.status = AnswerStatus.RIGHT;
+        }
+    }
+
+    private Long countContain(List<Integer> answerNumbers, List<Integer> playerNumbers) {
+        return answerNumbers.stream().filter(playerNumbers::contains).count();
+    }
+
+    private Long countStrike(List<Integer> answerNumbers, List<Integer> playerNumbers) {
+        return IntStream.range(0, BaseballNumber.BASEBALL_LENGTH)
+                .filter(i -> answerNumbers.get(i).equals(playerNumbers.get(i)))
+                .count();
+    }
+
+    public boolean isStatusWRONG() {
+        return status.equals(AnswerStatus.WRONG);
+    }
+
+    public String getString() {
+        String statement = "";
+        if (ball > 0) {
+            statement = statement.concat(String.format("%d볼 ", ball));
+        }
+        if (strike > 0) {
+            statement = statement.concat(String.format("%d스트라이크", strike));
+        }
+        if (statement.isEmpty()) {
+            statement = statement.concat("낫싱");
+        }
+        return statement;
+    }
+}
diff --git a/src/main/java/baseball/domain/BaseballNumber.java b/src/main/java/baseball/domain/BaseballNumber.java
new file mode 100644
index 0000000000..98a4c5a680
--- /dev/null
+++ b/src/main/java/baseball/domain/BaseballNumber.java
@@ -0,0 +1,47 @@
+package baseball.domain;
+
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class BaseballNumber {
+    public static final Integer BASEBALL_LENGTH = 3;
+    private final String REGEXP_PATTERN_INTEGER = String.format("[1-9]{%d}", BASEBALL_LENGTH);
+    private final List<Integer> numbers;
+
+    public BaseballNumber(String input) {
+        validate(input);
+        this.numbers = Stream.of(input.split("")).mapToInt(Integer::parseInt).boxed().toList();
+    }
+
+    private void validate(String input) {
+        isCorrectLength(input);
+        isInteger(input);
+        isDuplicate(input);
+    }
+
+    private void isCorrectLength(String input) {
+        if (input.length() != BASEBALL_LENGTH) {
+            throw new IllegalArgumentException("입력의 길이가 알맞지 않습니다.");
+        }
+    }
+
+    private void isInteger(String input) {
+        if (!Pattern.matches(REGEXP_PATTERN_INTEGER, input)) {
+            throw new IllegalArgumentException("입력이 정수로 이루어지지 않았습니다.");
+        }
+    }
+
+    private void isDuplicate(String input) {
+        if (Stream.of(input.split("")).collect(Collectors.toSet()).size() < BASEBALL_LENGTH) {
+            throw new IllegalArgumentException("입력 중 중복이 있습니다.");
+        }
+    }
+
+    public List<Integer> getNumbers() {
+        return new ArrayList<>(this.numbers);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/baseball/domain/Computer.java b/src/main/java/baseball/domain/Computer.java
new file mode 100644
index 0000000000..184a735a7f
--- /dev/null
+++ b/src/main/java/baseball/domain/Computer.java
@@ -0,0 +1,29 @@
+package baseball.domain;
+
+import camp.nextstep.edu.missionutils.Randoms;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Computer {
+    private List<Integer> answerNumbers;
+
+    public Computer() {
+        this.answerNumbers = makeRandomNumbers();
+    }
+
+    private List<Integer> makeRandomNumbers() {
+        List<Integer> numbers = new ArrayList<>();
+        while (numbers.size() < BaseballNumber.BASEBALL_LENGTH) {
+            int randomNumber = Randoms.pickNumberInRange(1, 9);
+            if (!numbers.contains(randomNumber)) {
+                numbers.add(randomNumber);
+            }
+        }
+        return numbers;
+    }
+
+    public Answer calculate(BaseballNumber baseballNumber) {
+        List<Integer> playerNumbers = baseballNumber.getNumbers();
+        return new Answer(answerNumbers, playerNumbers);
+    }
+}
diff --git a/src/main/java/baseball/domain/EndNumber.java b/src/main/java/baseball/domain/EndNumber.java
new file mode 100644
index 0000000000..2c1d670a43
--- /dev/null
+++ b/src/main/java/baseball/domain/EndNumber.java
@@ -0,0 +1,35 @@
+package baseball.domain;
+
+import java.util.regex.Pattern;
+
+public class EndNumber {
+    public static final Integer END_LENGTH = 1;
+    private final String REGEXP_PATTERN_FORMAT = String.format("[1-2]{%d}", END_LENGTH);
+    private final Integer number;
+
+    public EndNumber(String input) {
+        validate(input);
+        this.number = Integer.parseInt(input);
+    }
+
+    private void validate(String input) {
+        isCorrectLength(input);
+        isCorrectNumber(input);
+    }
+
+    private void isCorrectLength(String input) {
+        if (input.length() != END_LENGTH) {
+            throw new IllegalArgumentException("입력의 길이가 알맞지 않습니다.");
+        }
+    }
+
+    private void isCorrectNumber(String input) {
+        if (!Pattern.matches(REGEXP_PATTERN_FORMAT, input)) {
+            throw new IllegalArgumentException("입력값이 형식을 만족하지 않습니다.");
+        }
+    }
+
+    public boolean isEnd() {
+        return this.number == 2;
+    }
+}
diff --git a/src/main/java/baseball/game/Game.java b/src/main/java/baseball/game/Game.java
new file mode 100644
index 0000000000..28b1138159
--- /dev/null
+++ b/src/main/java/baseball/game/Game.java
@@ -0,0 +1,30 @@
+package baseball.game;
+
+import baseball.domain.Answer;
+import baseball.domain.BaseballNumber;
+import baseball.domain.Computer;
+import baseball.domain.EndNumber;
+import baseball.view.View;
+
+public class Game {
+    private Computer computer;
+
+    public Game() {
+        this.computer = new Computer();
+    }
+
+    public void start() {
+        View.init();
+        Answer answer;
+        do {
+            BaseballNumber baseballNumber = new BaseballNumber(View.input());
+            answer = computer.calculate(baseballNumber);
+            View.showAnswer(answer.getString());
+        } while (answer.isStatusWRONG());
+    }
+
+    public boolean end() {
+        EndNumber endNumber = new EndNumber(View.showEnd());
+        return endNumber.isEnd();
+    }
+}
diff --git a/src/main/java/baseball/view/View.java b/src/main/java/baseball/view/View.java
new file mode 100644
index 0000000000..86cd4eb449
--- /dev/null
+++ b/src/main/java/baseball/view/View.java
@@ -0,0 +1,25 @@
+package baseball.view;
+
+import camp.nextstep.edu.missionutils.Console;
+
+public class View {
+
+    public static void init() {
+        System.out.println("숫자 야구 게임을 시작합니다.");
+    }
+
+    public static String input() {
+        System.out.println("숫자를 입력해주세요 : ");
+        return Console.readLine();
+    }
+
+    public static void showAnswer(String statement) {
+        System.out.println(statement);
+    }
+
+    public static String showEnd() {
+        System.out.println("3개의 숫자를 모두 맞히셨습니다! 게임 종료");
+        System.out.println("게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.");
+        return Console.readLine();
+    }
+}