the worlds smallest tetris (256 byte)

http://www.256b.com/demo/477


amazing what these guys put into 256 bytes of machine code.

 

Good job with what is there so far. But:

1. I is 3 blocks long.
2. O appears absent.
3. Moving a piece to the wall before it falls by 1 block causes game over rather than the piece stopping.
4. Developer wasn't creative enough to think of a name other than "tetris", which is taken.