Gemsweeper is a thinking puzzle casual game

Casual game

A casual game is a video game targeted at or used by a mass audience of casual gamers. Casual games can have any type of gameplay, and fit in any genre. They are typically distinguished by their simple rules and lack of commitment required in contrast to more complex hardcore games...

 developed by Lobstersoft.
During the game the player rebuilds the ruins of El Dorado by solving over 225 nonogram logic puzzles.

Story

In Gemsweeper the player assumes the role of a treasure hunter. When working in a museum putting together the pieces of a broken Olmec

Olmec

The Olmec were the first major Pre-Columbian civilization in Mexico. They lived in the tropical lowlands of south-central Mexico, in the modern-day states of Veracruz and Tabasco....

 statue, the statue becomes alive and asks the player and old professor McGuffog to rebuild the mystical city of El Dorado

El Dorado

El Dorado is the name of a Muisca tribal chief who covered himself with gold dust and, as an initiation rite, dived into a highland lake.Later it became the name of a legendary "Lost City of Gold" that has fascinated – and so far eluded – explorers since the days of the Spanish Conquistadors...

. By solving over 225 puzzles, the player gradually rebuilds the ruins of the city and progresses his treasure hunter rank.

Gameplay

The player has to uncover gems which are hidden behind some tiles and has to break all other tiles on the board. Numerical hints above and to the left of the board tell the player where the hidden gems are. Gems are picked up with a hand cursor whereas cursed tiles are smashed with a hammer. Jokers help if the player has to guess what's behind a tile.

Gemsweeper features an interactive tutorial to teach the player the basic principle of nonogram logic puzzles.

In Arcade Mode the gameplay is different from traditional
nonograms. The puzzle does not contain a picture, but is abstract. As soon as a row is solved, a new row with different hints appear.