I figured out why the Wii's attach rate is lower than it could be

[PhalanxCO]

I have 13 games:

 

Wii SportsWii PlayWii FitSuper Mario GalaxyExcite TruckSuper Paper MarioMetroid Prime 3Zelda TPSuper Smash Bros Brawl

Zack & WikiBoom BloxMadden 07Trauma Center

Plus 5 VC games.  I'm planning on at least 4 more games this year (RBII or GH4, AC, de Blob and Disaster if it comes out before January)