Alawar Entertainment, a leading publisher of shareware games, has released Traffic Jam Extreme, a puzzle game in which the player's goal is to untangle vehicular gridlock on the streets of Stresstropolis.
Each level requires the player to move one or more vehicles through the bottleneck. To reposition an automobile, the player clicks on it and then selects an empty tile. A car can't be moved, however, if other means of transportation or obstacles are in the way.
As the player contemplates the solution, a Stress Meter gradually fills up. If the player blows his or her lid, he or she loses one life. Points are awarded based on how quickly the player solves a puzzle; extra lives are granted every 20,000 points.
Before the player is allowed to tackle the Big Apple, he or she has to navigate the outskirts of Stresstropolis, where the holdups are easier to clear and there's less traffic.
Traffic Jam Extreme contains 150 levels in seven cities.