Smashing! Is a rather posh 3D arcade shooter by Warpfish for the Wii.

Changes:

4 new areas
Original Game modes re-vamped
Now a total of 7 Single player game modes
Now a total of 9 Multi-player game modes
New songs
Nunchuk Reload
Online Scoreboard
Crosshair animation and roll
Updated menu
Supports both NTSC and PAL correctly (we think)
Obeys Wii video shift settings
Song select
In game restart
Instructions updated
More accurate target hit detection
Get Ready, Shoot and Finished stages with sounds
Some environmental effects
Target colours now consistent across areas and modes
More sensitive reload

http://www.wiibrew.org/wiki/Smashing!