Platform: Windows XP
Number of downloads: 819
This game has it all: slick graphics, addictive gameplay and loads of levels.
Put simply, your task is to guide a lone marble through each maze, collecting all the jewels on the way. It sounds easy, but there are various obstacles in your path including locked doors, arrows that push you in different directions, and skulls and crossbones.
Click on the desired square and the marble moves to that position, as long as its path is clear of obstacles. If it isn't, right-click on a square to put it in your pocket. This allows you to swap it with another square, and is the way round many obstacles.
This demo features 16 levels, which should be enough to keep you scratching your head for quite some time. The second level got me for a little while!
A training mission guides you through the game, detailing all the rules and obstacles, and is much easier to understand than any manual.
Purchase price: $17.99 for access to all 96 difficult levels.