Diablo is an action role-playing game first released by Blizzard Entertainment on January 5, 1997. The context of the game is the fictional kingdom of Khanduras with rebellion taking place everywhere. The story revolves around the main character named Lord of Terror, he is a lone hero of the kingdom and also the one who fought to free Khanduras from rebellions. Behind the kingdom’s underground is the town of Tristram, which is also the base for the rebels. Your journey in the game will be associated with this town, and you will have to pass 16 dungeon maps to face the last boss of the game, Diablo. When starting the game, the system will ask you to create a new character. The game consists of three character classes are Warrior, rogue, and mage. Each class has its attributes with different fighting styles and a unique skill. The warrior class has the greatest physical strength with high hit resistance and a strong melee attack. Besides, the rogue class is a master of ranged combat. Although not as strong in close combat, enemies will be hard to reach to attack with this class. Meanwhile, the magician class is the weakest physical strength among the three classes. However, this class can learn many high-level spells with tremendous damage and abundant energy.