A fully HTML5 Tetris Game !
The rules are pretty simple: make lines with the pieces. But careful, if your pieces pile to the top, you lose.
The commands are described at the starting screen. Press Enter to start the game.
If you want to enable focus on the game, just click on it. Click somewhere else to disable it.
Development details are in the section below. Source code is on the right and the matching comments are on the left.