Mac Tetris Game Killed by The Tetris Company

Over on Boing Boing, I found an article from Cory Doctorow that tells about a Mac Tetris clone that has been threatened out of existence, even though there are hundreds of tetris clones out there. So why pick on this guy?

Since I am a recent mac owner, I'm kind of sad that such a ubiquitous game running on a platform that is not the most popular in the world should still be the subject of threatened legal action.