Taito has a new action puzzle game coming out for the PSP.
Here's a preview:
http://www.the-magicbox.com/0509/game050910g.shtml
It looks interesting. I like the visual style and the idea of the game. In the game you play as Mr. ESC, whose mission is to help people to escape from dangerous places. In each stage you must find the victims, search for ways to get to the exit, find keys and remove traps or obstacles. There are more than 100 stages in the game.
It's slated for a December release in Japan.