Gameplay is pretty much exactly what you'd expect. You use the arrow keys to rotate blocks and hit the spacebar to drop them quickly to the bottom of the screen. You can either join a game hosted by another user or create your own if you're a registered user. Matches can have just a few players, or as many as 8.
There are a few interesting aspects to the multiplayer gameplay. For example if you break two or more lines apart at the same time, each of your competitors will get a new line of blocks. That makes Blockles a bit more fast-paced than the original Tetris game, but also a bit more addictive.
[via Silicon Alley Insider
