So apparently this Wii thing is popular?

Pow! Blam! Thwack! That's the sound of the Wii's biggest software performers in 2008 so far. The likes of Super Smash Bros. Brawl, Wii Fit, and Mario Kart Wii have taken some of the the top places in a new Top Global Markets Report, as calculated by chart specialists Enterbrain (Japan), NPD (the U.S.) and Gfk Chart-Track (the UK).

Although top spot goes to Grand Theft Auto IV (6.29 million copies sold in 2008 so far), the next four places feature Wii games, three of which are exclusives. Brawl (5.4 million) was runner-up, while Mario Kart Wii (4.6 million) and Wii Fit (3.6 million) reached third and fourth respectively. Guitar Hero III (just under 3.4 million) was fifth; obviously, the Wii also had a hand in that.

What does this prove? Well, little that we didn't already know: that Nintendo's console and games are obscenely popular -- even when said games cost way more than regular titles. With four months of the year still to go, we wouldn't rule out one or more of those Nintendo exclusives overhauling that insolent Russian Niko. Commence yaaaaying.

This article was originally published on Joystiq.