Okay, SSBM came out way before Nintendo started letting us register our products, correct?
A friend of mine at work, who purchased one of the Mario Party 7 GameCube bundles - and shortly afterwards, SSBM - swears he registered his copy of SSBM. I really, really don't think he'd lie about this.
And thus, I'm left wondering if the newer versions of some games are shipping with registration codes? Any ideas?