Against the grain: Why is the Wii so rubbish at mature games?

[TripleMMM]

Conegamer said:

I didn't realise about the WoW commercials, but every BlOps commercial I've seen says "only for 360 and PS3 on", some of which don't eve acknowledge the Wii version!

I can back him up on that one CG, they do have the Wii logo on them.