High:
Controls:
Left/Right - move
Down - drop faster
Up - rotate
P - pause
Alternate:
A/D - left/right
S - down
W - rotate
(Alt. keys are for browsers that don't like using the arrow keys).
HINT: You get bonuses for starting with more blocks on the screen and also for having a faster speed. So if you start at Speed 9, you'll get the speed bonus AND your speed won't change until you get 100 lines. If you can manage that AND have your "High" at 5, you'll get a lot of bonuses for each clear.
I don't know who in fact owns the Tetris copyright. I certainly don't, but I do own this code, so if you want to use it, ask me first, or in the least credit me somehow.