diff --git a/game/src/main/Exercise.md b/game/src/main/Exercise.md
new file mode 100644
index 0000000..896ea8b
--- /dev/null
+++ b/game/src/main/Exercise.md
@@ -0,0 +1,22 @@
+11장 상속 연습문제
+
+#문제 1
+
+**정답** : 2,3,5
+
+2번 : 엔진은 자동차의 부품이지만 자동차는 아니다
+
+3번 : 자식은 아버지가 아니다
+
+5번 : 서로의 개념이 바뀌었음
+
+#문제 2
+
+**정답** :
+
+(1) : 부모클래스 - Electronic devices / 자식클래스 - iphone
+
+(2) : 부모클래스 - Transportation / 자식클래스 - bmw
+
+(3) : 부모클래스 - BOOK / 자식클래스 - EnglishDictionary
+
diff --git a/game/src/main/java/com/survivalcoding/GreatWizard.java b/game/src/main/java/com/survivalcoding/GreatWizard.java
new file mode 100644
index 0000000..6a831a3
--- /dev/null
+++ b/game/src/main/java/com/survivalcoding/GreatWizard.java
@@ -0,0 +1,24 @@
+package com.survivalcoding;
+
+public class GreatWizard extends Wizard {
+
+    public GreatWizard() {
+        this.mp = 150;
+        this.heal = 25;
+        this.mpCost = 5;
+    }
+
+    public void heal(Hero hero) {
+        super.heal(hero);
+    }
+
+    public void superHeal(Hero hero) {
+        if (this.mp >= 50) {
+            hero.setHp(Hero.MAX_HP);
+            this.mp -= 50;
+            System.out.println("슈퍼 힐을 시전했습니다. " + hero.name + "HP : " + hero.getHp());
+        } else {
+            System.out.println("마나가 부족합니다");
+        }
+    }
+}
diff --git a/game/src/main/java/com/survivalcoding/Hero.java b/game/src/main/java/com/survivalcoding/Hero.java
index ce52b3a..bfeb152 100644
--- a/game/src/main/java/com/survivalcoding/Hero.java
+++ b/game/src/main/java/com/survivalcoding/Hero.java
@@ -1,8 +1,42 @@
 package com.survivalcoding;
 
+import java.util.Random;
+
 public class Hero {
+    static final int MAX_HP = 100;
+    static int money = 100;
+
     String name;
     int hp;
+    Sword sword;
+
+    Hero() {
+        this.name = "임용사";
+        this.hp = 100;
+    }
+
+    Hero(String name) {
+        this.name = name;
+        this.hp = 99;
+    }
+
+    public Hero(String name, int hp) {
+        this.name = name;
+        this.hp = hp;
+    }
+
+    public int getHp() {
+        return this.hp;
+    }
+
+    public void setHp(int hp) {
+        this.hp = Math.min(hp, MAX_HP);
+    }
+
+    static void setRandomMoney() {
+        money = new Random().nextInt(1000);
+        System.out.println("초기금 : " + money);
+    }
 
     // 나는 공격하면 hp 가 1씩 빠진다
     void attack() {
@@ -10,4 +44,29 @@ void attack() {
         // sout
         System.out.println("공격했다");
     }
+
+    void run() {
+        System.out.println(this.name + "는 도망쳤다!");
+        System.out.println("GAME OVER");
+        System.out.println("최종 HP는" + this.hp + "입니다");
+    }
+
+    void sit(int sec) {
+        //앉은 초 수만큼 hp 증가
+        this.hp += sec;
+
+        System.out.println(this.name + "는" + sec + "초 앉았다");
+        System.out.println("HP가" + sec + "포인트 회복되었다");
+    }
+
+    void slip() {
+        this.hp -= 5;
+        System.out.println(this.name + "는 넘어졌다!");
+        System.out.println("5의 데미지!");
+    }
+
+    void sleep() {
+        this.hp = 100;
+        System.out.println(this.name + "는 잠을 자고 회복했다!");
+    }
 }
diff --git a/game/src/main/java/com/survivalcoding/Main.java b/game/src/main/java/com/survivalcoding/Main.java
index 03dc735..bebd0be 100644
--- a/game/src/main/java/com/survivalcoding/Main.java
+++ b/game/src/main/java/com/survivalcoding/Main.java
@@ -4,16 +4,72 @@
 // click the <icon src="AllIcons.Actions.Execute"/> icon in the gutter.
 public class Main {
     public static void main(String[] args) {
-        // 인스턴스 생성
-        Hero hero = new Hero();
 
-        hero.hp = 10;
-        hero.attack();  // 9
-        hero.attack();  // 8
+        //용사 이름, hp를 설정
+        Hero hero = new Hero("김용사");
+        Hero hero2 = new Hero();
 
-        System.out.println(hero.hp);    // 8
+        SuperHero superHero = new SuperHero("홍길동", 100);
+        superHero.run();
 
-        int a = 10;
-        long l = 10L; // literal 리터럴
+        PoisonSlime poisonSlime = new PoisonSlime("독");
+        poisonSlime.setHp(100);
+        poisonSlime.attack(superHero);
+
+//        Wizard wizard = new Wizard();
+//        wizard.heal(hero);
+
+        GreatWizard grateWizard = new GreatWizard();
+        grateWizard.heal(superHero);
+        grateWizard.superHeal(superHero);
+
+
+        //hero.name = "김용사";
+        //hero.hp = 100;
+//        System.out.println("용사" + hero.name + "를 생성했습니다!");
+//        System.out.println("용사의 체력은" + hero.hp + "입니다!");
+//        System.out.println("용사의 재력은" + Hero.money + "입니다!");
+//        Hero.money = 200;
+//        System.out.println("용사의 재력은" + Hero.money + "입니다!");
+//
+//        System.out.println("용사" + hero2.name + "를 생성했습니다!");
+//        System.out.println("용사의 체력은" + hero2.hp + "입니다!");
+//        Hero.setRandomMoney();
+//        System.out.println("용사의 재력은" + Hero.money + "입니다!");
+//
+//        Wizard wizard = new Wizard();
+//        wizard.name = "김법사";
+//        wizard.hp = 50;
+
+//        wizard.heal(hero);
+
+        //검 이름, 데미지 설정
+//        Sword sword = new Sword();
+//        sword.name = "불의 검";
+//        sword.damage = 10;
+//        System.out.println("현재 무기는" + sword.name + "입니다!");
+//
+//        Kinoko kinoko1 = new Kinoko();
+//        kinoko1.hp = 50;
+//        kinoko1.suffix = 'A';
+//
+//        Kinoko kinoko2 = new Kinoko();
+//        kinoko2.hp = 51;
+//        kinoko2.suffix = 'B';
+
+        //용사에게 5초 앉기 , 넘어지기 , 25초앉기 , 도망을 지시
+//        hero.sit(5);
+//        hero.slip();
+//        hero.sit(25);
+//        hero.run();
+
+        //용사 공격
+//        hero.attack();  // 9
+//        hero.attack();  // 8
+
+//        System.out.println(hero.hp);    // 8
+
+//        int a = 10;
+//        long l = 10L; // literal 리터럴
     }
 }
\ No newline at end of file
diff --git a/game/src/main/java/com/survivalcoding/PoisonSlime.java b/game/src/main/java/com/survivalcoding/PoisonSlime.java
new file mode 100644
index 0000000..fb560df
--- /dev/null
+++ b/game/src/main/java/com/survivalcoding/PoisonSlime.java
@@ -0,0 +1,24 @@
+package com.survivalcoding;
+
+public class PoisonSlime extends Slime {
+
+    private int poisonCount = 5;    //독 공격 가능 횟수
+
+    public PoisonSlime(String suffix) {
+        super(suffix);
+    }
+
+    @Override
+    public void attack(Hero hero) {
+        super.attack(hero);
+
+        if (poisonCount != 0) {
+            System.out.println("추가로, 독 포자를 살포했다!");
+            int poisonDamage = hero.getHp() / 5;    //독데미지
+            hero.setHp(hero.getHp() - poisonDamage);
+            System.out.println(poisonDamage + "포인트 데미지");
+            this.poisonCount--; //독 공격 가능 횟수 차감
+        }
+    }
+
+}
diff --git a/game/src/main/java/com/survivalcoding/Slime.java b/game/src/main/java/com/survivalcoding/Slime.java
new file mode 100644
index 0000000..efd8938
--- /dev/null
+++ b/game/src/main/java/com/survivalcoding/Slime.java
@@ -0,0 +1,28 @@
+package com.survivalcoding;
+
+public class Slime {
+    final String suffix;
+    int hp;
+
+    public Slime(String suffix) {
+        this.suffix = suffix;
+    }
+
+    public String getSuffix() {
+        return this.suffix;
+    }
+
+    public int getHp() {
+        return this.hp;
+    }
+
+    public void setHp(int hp) {
+        this.hp = hp;
+    }
+
+    void attack(Hero hero) {
+        System.out.println("슬라임 " + suffix + "이/가 공격했다");
+        System.out.println("10의 데미지");
+        hero.setHp(hero.getHp() - 10);
+    }
+}
diff --git a/game/src/main/java/com/survivalcoding/Wizard.java b/game/src/main/java/com/survivalcoding/Wizard.java
new file mode 100644
index 0000000..075c355
--- /dev/null
+++ b/game/src/main/java/com/survivalcoding/Wizard.java
@@ -0,0 +1,21 @@
+package com.survivalcoding;
+
+public class Wizard {
+    String name;
+    int hp;
+    //protected : 자식클래스 사용 가능하도록 만듬
+    protected int heal = 20;
+    protected int mp = 100;
+    protected int mpCost = 10;
+
+    public void heal(Hero hero) {
+        System.out.println("현재 체력 : " + hero.getHp());
+        if (this.mp >= 10) {
+            hero.setHp(hero.getHp() + heal);
+            this.mp -= mpCost;
+            System.out.println("힐을 시전했습니다. " + hero.name + "HP : " + hero.getHp());
+        } else {
+            System.out.println("마나가 부족합니다");
+        }
+    }
+}