atari2600land picked up the work on his bBasic Tetris game for A2600.

Release notes from atari2600land:

What’s new pussycat? Whoaoaoaoooa? I’ll tell you.
+ There was a bug where the top row wasn’t moving down like it should. I fixed it.
+ Added a game over screen.
+ Changed a few notes in the title screen music.

http://www.atariage.com/forums/index.php?showtopic=135837