Bastard Tetris
fph.altervista.org
fph.altervista.org
Which I discovered because, for Hatetris, he wrote a nice twitter-oriented compact binary-to-text encoding, base65536[2].
> If you can't figure out how to turn a constant stream of S pieces to your advantage, that's your problem. Rest assured that once you do, other pieces will appear. If you get creative, it is possible to force all 7 different pieces to appear, including even those incredibly useful T pieces.
https://open.library.ubc.ca/media/download/pdf/831/1.0079748...
[edit] Today managed a score of 7 with playing around with it.
Another interesting one is that it changes all of the blocks to be monochromatic, including in the "Next Block" preview. It turns out that mode is actually more challenging than you might think; at the speed the blocks are dropping, you depend on peripheral vision to tell you what blocks are upcoming, and now you have to actually examine the block to figure out what it is instead of just knowing from the colour.
I am declaring myself victorious
http://tetris.wikia.com/wiki/Random_Generator
Probably won't be very bastard at all though, e.g. there must be an I in each group of 7