diff --git a/SpartBaseBallGame/SpartBaseBallGame/Sources/BaseBall/BaseBallGame.swift b/SpartBaseBallGame/SpartBaseBallGame/Sources/BaseBall/BaseBallGame.swift
index 0e68dc0..c01172d 100644
--- a/SpartBaseBallGame/SpartBaseBallGame/Sources/BaseBall/BaseBallGame.swift
+++ b/SpartBaseBallGame/SpartBaseBallGame/Sources/BaseBall/BaseBallGame.swift
@@ -11,23 +11,67 @@ import LogMacro
 actor BaseBallGame {
   private let digits = 3
 
-  // MARK: - 게임시작
+  // MARK: - 게임 시작
   func start() async {
-    #logInfo("게임 시작 — 규칙: 1~9, 서로 다른 \(digits)자리")
-    _ = makeAnswer()
+    #logDebug("< 게임을 시작합니다 >")
+    let answer = makeAnswer()
+    #logDebug("정답 생성: \(answer)")
+
+    while true {
+      #logDebug("숫자를 입력하세요")
+      guard let line = await readLineAsync(),
+            let guess = parseGuess(from: line) else {
+        #logDebug("올바르지 않은 입력값입니다")
+        continue
+      }
+
+      let result = judge(answer: answer, guess: guess)
+
+      switch result {
+        case .correct:
+          #logDebug("정답입니다!")
+          return
+
+        case .nothing:
+          #logDebug("Nothing")
+
+        case .strikeAndBall(let strike, let ball):
+          var parts: [String] = []
+          if strike > 0 { parts.append("\(strike)스트라이크") }
+          if ball > 0 { parts.append("\(ball)볼") }
+          #logDebug(parts.joined(separator: " "))
+      }
+    }
+  }
+
+  // MARK: - 입력 파싱
+  private func parseGuess(from input: String) -> [Int]? {
+    let trimmed = input.trimmingCharacters(in: .whitespacesAndNewlines)
+    guard trimmed.count == digits,
+          trimmed.allSatisfy({ $0.isNumber }),
+          !trimmed.contains("0") else { return nil }
+    let numbers = trimmed.compactMap { Int(String($0)) }
+    guard Set(numbers).count == digits else { return nil }
+    return numbers
   }
 
-  // 매 라운드 정답 생성
+  // MARK: - 판정
+  private func judge(answer: [Int], guess: [Int]) -> JudgeResult {
+    let strikeCount = zip(answer, guess).filter { $0 == $1 }.count
+    let ballCount = guess.filter { answer.contains($0) }.count - strikeCount
+    if strikeCount == answer.count { return .correct }
+    if strikeCount == 0 && ballCount == 0 { return .nothing }
+    return .strikeAndBall(strike: strikeCount, ball: ballCount)
+  }
+
+  // MARK: - 정답 생성
   private func makeAnswer() -> [Int] {
     var pool = Array(1...9)
     pool.shuffle()
-    #logDebug("랜덤 숫자", Array(pool.prefix(digits)))
     return Array(pool.prefix(digits))
   }
 
-
-
-  // MARK: - realine
+  // MARK: - readLine 비동기 래핑
   func readLineAsync() async -> String? {
     await withCheckedContinuation { continuation in
       Task.detached(priority: .userInitiated) {
diff --git a/SpartBaseBallGame/SpartBaseBallGame/Sources/BaseBall/JudgeResult.swift b/SpartBaseBallGame/SpartBaseBallGame/Sources/BaseBall/JudgeResult.swift
new file mode 100644
index 0000000..f090d27
--- /dev/null
+++ b/SpartBaseBallGame/SpartBaseBallGame/Sources/BaseBall/JudgeResult.swift
@@ -0,0 +1,14 @@
+//
+//  JudgeResult.swift
+//  SpartBaseBallGame
+//
+//  Created by Wonji Suh  on 8/27/25.
+//
+
+import Foundation
+
+enum JudgeResult {
+    case correct
+    case nothing
+    case strikeAndBall(strike: Int, ball: Int)
+}
diff --git a/SpartBaseBallGame/SpartBaseBallGame/Sources/GameStart/GameManger.swift b/SpartBaseBallGame/SpartBaseBallGame/Sources/GameStart/GameManger.swift
new file mode 100644
index 0000000..25aee43
--- /dev/null
+++ b/SpartBaseBallGame/SpartBaseBallGame/Sources/GameStart/GameManger.swift
@@ -0,0 +1,17 @@
+//
+//  GameManger.swift
+//  SpartBaseBallGame
+//
+//  Created by Wonji Suh  on 8/27/25.
+//
+
+import Foundation
+import Combine
+
+actor GameManger {
+  let baseBall = BaseBallGame()
+  // MARK: - 야구 게임 시작
+  func baseBallGameStart() async {
+    await baseBall.start()
+  }
+}
diff --git a/SpartBaseBallGame/SpartBaseBallGame/Sources/Main/main.swift b/SpartBaseBallGame/SpartBaseBallGame/Sources/Main/main.swift
index 15537b2..f3085e3 100644
--- a/SpartBaseBallGame/SpartBaseBallGame/Sources/Main/main.swift
+++ b/SpartBaseBallGame/SpartBaseBallGame/Sources/Main/main.swift
@@ -7,7 +7,8 @@
 
 import Foundation
 
-let gameManger = GameManager()
 
-await gameManger.baseBallGameStart()
+let gameManager = GameManager()
+
+await gameManager.baseBallGameStart()