Mac users interested in Open source mac tetris generally download:
Not Tetris 2 is a very interesting Tetris spin-off. It is a free, multi-platform game. It is currently available for Windows, Linux, and Mac OS X. It is also an open-source project, so you can download the source code and compile it yourself if you want. In Not Tetris 2, the blocks that fall from the top of the screen don't behave like the ones that you are used to playing with.
Additional suggestions for Open source mac tetris by our robot:
Showing results for "open source tetris" as the word mac is considered too common
Gottet is an open source Tetris clone that you can play on your Mac.
is an open source Tetris clone
Mac Crack Attack is a port of Crack Attack to the Mac OS X platform.
Nintendo classic Tetris Attack...Attack is open-source