Wii Sports NOT nº1 because...

[Thrillhouse]

Erik Aston said:

Wii Sports is not number 1 because other games have outsold it.

1. Super Mario Bros.  47.57M
40.24M for NES
5.07M for GBC
2.26M for GBA

2. Pokemon Red/Green/Blue/Yellow  46.02M
For GB
31.38M for Red/Green/Blue versions
14.64M for Yellow version (special edition)

You are combining... but Going by that, then I'd guess about April 09?