Worst Piece Piece Game

I.e. Malevolent Tetris™ AI

What is this? Another Tetris clone with malevolent AI? Yes, I am aware of Bastet. And of HATETRIS. Both of them suffer from a fundamental problem: They are HEAVILY biased towards the S and Z pieces. They give disproportionally large number of S and Z pieces. Contrast to this game!

This game actually implements the Random Generator algorithm, that is implemented in modern Tetris brand games. It is guaranteed to be completely fair. For example, you can never get a streak of three S pieces in a row. The interval between two I pieces can also never be longer than 13 pieces.
It also implements a portion of the Tetris Guidelines. For example, it always provides the helpful display of the next piece, which further restricts the extent of cheating the game might do. You also get the "hold" button, with which you can swap the current piece with one in the hold. You can only swap the current piece once, though.

Now, within these boundaries, the game still tries its best to make sure you never get what you want when you want it. Let me know how well it fares!

Keys: UP = Rotate clockwise, DOWN = Drop one row, SPACE = Drop and lock, LEFT & RIGHT = Self-evident, H = Swap&hold
THERE IS NO GRAVITY. There is, however, combo scoring, T-kick scoring, etc.

Game created by Joel Yliluoma - http://iki.fi/bisqwit/ in 2012