3D Logic is a new puzzle game developed by Alex Matveev for Microgames. The goal of the game is really simple: connect each pair of same-colored blocks with an unbroken line that does not cross over another color.
You control the 3D cube with your mouse. Click on a colored block and drag along the empty spaces to create a line that connects the pair. Use the clear button to restart the current puzzle from the beginning.
As there is no time limit, don’t worry if you make a mistake in the process of drawing a line. Just use the undo or restart buttons.
With 30 different levels, an increasing difficulty, really nice graphics, and an automatic saving progress option which allows you to come back later, 3D Logic is a very well designed flash puzzle game. Expect a couple of hours (or even more) to complete the 30 levels.
Note: Richard Smith has developed Hyper Frame, a shockwave 3D puzzle based on the same concept. The game was release last year and is available here.
Update: for an unknown reason, this game was released with a new name, Crazy Cube, by 2DPlay.
Each level features the same puzzle, but the colors change all the time.