I think there have been a few already in gosu/ruby (and many more elsewhere) but this is my attempt at Tetris.
I did this as an example of using a rotation matrix for school, then just finished it off.

There is nothing special about it, there is a stupid mode where I changed the blocks, but the originals are still the best imo
Nothing special but here for anybody to give a prod at.

Video: http://vimeo.com/10747643

Source: http://github.com/PhilCK/Falling-Blocks

I've not tried this windows it might need a few tweaks

Pretty nice, I liked the demonstration of a very minimal state system. Controls could need improvement imho, by starting a counter when first hitting a direction and then moving every n ticks after that. Right now I accidentally moved two steps sometimes when I wanted to move by one.

god the code got really bad towards the end of the project. I tend to try something a little different every time with these things, oh well.

I did notice that about the controls, I was being alittle lazy :) thanks for the prod, after all that procrastination it took about 10 seconds to do