3-D Tetris

Jeff Mastropietro is a guy who develops Flash video games under the banner of Digital Machina. The first game he developed was called Cubical, and is "a three-dimensional stacking game, simliar to Tetris, but in three dimensons."

In the game, which is free to play, you stack different cube orientations in a 2-D representation of a 3-D playing area. It's tricky to get your head thinking about being able to rotate the object blocks in another dimension, and you'll need a bit of practice to figure out how to get control of the controls, but it's a cool little game.

Digital Machina took things a step further with Tetrical, which uses 3-D versions of the polycubes that were made famous by Tetris. If you thought Cubical was tricky, just try your hand at Tetrical.

Makes my head spin this early in the morning.