In Gemsweeper the player assumes the role of a treasure hunter. When working in a museum putting together the pieces of a broken Olmec statue, the statue becomes alive and asks the player and old professor McGuffog to rebuild the mystical city of El Dorado. By solving over 225 puzzles, the player gradually rebuilds the ruins of the city and progresses his treasure hunter rank.

You are on a puzzle expedition in an ancient temple city. Your goal is to rebuild the timeworn ruins of El Dorado by solving a series of over 225 mind bending puzzles.