On the Openpandora:
Majong, from the Gnome Games:
Just played a bit, thats a good game for the Touchscreen, and for the Batterie, because it dont need much power, and you only has to put the stylus on the screen on the right Majong Stone, and the Majong Stone who looks like the other.., this, and tetris seems like the best games, on the Pandora if you need just a game to kill some time ("die Zeit totschlagen" like whe say in Sauerkrautland (i dint like Sauerkraut by the way)
Playstation Vita:
The Gravity Rush Demo,
and Disgaea 3