Quinn. Possibly the best tetris client ever made. A couple weeks ago The Tetris Company forced Simon Haertel to stop the distribution of Quinn and threatened legal action. After seeking legal Advice, Haertel removed all mentions of tetris from his website and instead calls it an “implementation of a popular falling-blocks game”. The app uses amazing graphics, and has great networking features allowing you to play with friends over bonjour or over the internet. I’m glad to see that Quinn is back in development and is once again open to the public.
Some years later, the Tetris Company sues Quinn creator yet again. And not, there isn’t a decent tetris game for Mac OS X. Shame on The Tetris Company!