Sure, Achewood and xkcd have joked about it, but it took the sadism of Sam Hughes to make Hatetris — a one-off Tetris clone that spits out the statistically worst possible piece with every move — a reality.
As it damn well would, it starts with a ton of 'S' blocks — the bane of every Tetris champ — but just as you learn patterns to cope with that, it throws something more unmanageable your way.
Hughes has added a replay feature which allows you to view skillful runs — here meaning those that score over 10 cleared lines — by other players. Hughes himself has only managed a top score of 5. My own is 3. It really is mean.
Hatetris [Sam Hughes]