I have had more time to play games in Japanese arcades and have run across a few more interesting titles.
Tetris Plus 2: This is a fun Japanese only spin-off of Tetris. In the Puzzle Mode, you get to control either a Professor or her Apprentice through Tetris levels with a bit of a twist: you have to make the Tetris board completely empty in the time limit. Your cartoon avatar runs arounds the blocks as you make lines and a spiked wall tries to crush you as the time limit goes down-- the higher your blocks are, the more your avatar wants to climb to the top to get killed! It is a fun take on Tetris.