King's Quest: Mask of Eternity is an action-adventure video game released by Sierra Studios in 1998 for the PC platform. It is part of the King's Quest series, known for its engaging gameplay and immersive storytelling. The game features a captivating storyline, challenging puzzles, and a variety of characters to interact with. With a Teen rating, players can enjoy the game's unique blend of adventure and exploration in a richly detailed fantasy world.