Nanostray 2 is a scrolling
shooter video game for the Nintendo DS and sequel to the
original Nanostray.
Addressing the complaints many had with tacked-on touchscreen
features, Nanostray 2 has three control schemes -- classic
control, left-handed touch control, and right-handed touch control.
Like the previous game, gameplay focuses more on graphic quality
rather than touch-screen control. Customization remains a key part
of the experience: at the start of a level, players have the
ability to adjust which special weapons they'll take into the
fight, and also alter the angle of their side-mounted guns as they
get mounted on the front, sides and rear of the ship during the
action. Besides the main single-player mode, Nanostray 2
also has a Challenge mode, where players can try to get a set
number of points, collect a set number of coins, or survive for a
specific time limit.
its like the arcade
plane-shoot-enemies-with-multiple-bullets-to-dodge game, and you
can either choose to control the plane with the directional pad or
stylus, stylus is much easier to dodge
quite fun, recommended 
http://en.wikipedia.org/wiki/Nanostray_2
