New still sealed . The product is a vintage PC game called ZorkQuest The Crystal of Doom, released in 1988 by Infocom. This game is a part of the popular Zork series, known for its engaging storytelling and puzzle-solving gameplay. As a product of Infocom, a US-based company, it offers an immersive and challenging experience for fans of classic video games. This 5 1/4 inch game is a must-have for collectors and enthusiasts of retro gaming.