Mario Is Missing! is an educational adventure game published by Mindscape for the NES. You play as Luigi, who must rescue Mario, who has been kidnapped by Bowser. Instead of traditional platforming, the gameplay involves exploring real-world cities, answering trivia questions, and collecting items to stop Bowser's plans. A unique feature is the "educational" focus – you learn geography, history, and culture as you travel to cities like New York, Paris, and Tokyo, answering questions about landmarks and facts. You must also collect artifacts that Bowser has stolen. The game includes a world map with various locations to visit. A trivia: the game was developed by The Software Toolworks and was part of the "Mario Discovery" series, which aimed to educate children. The graphics are colorful and detailed, with a simple interface that shows the city and the questions. The music is light and educational, with a cheerful tune. Critics appreciated the learning aspect but found the gameplay repetitive. It supports one player. The final challenge is to rescue Mario by answering a series of questions. Mario Is Missing! is a unique title in the Mario series, focusing on education rather than action.