Nintendo has announced the launch of worldwide Mario Kart Wii Tournaments, which will be coming every few weeks. The first one, available now, is a competition for fastest time on Mario Circuit. "Look closely though," said the press release, "something may be different." (For whatever reason, we haven't been able to get online to see what difference there might be.)

Best times will be recorded and viewed on worldwide rankings. Future tournaments might also include collecting coins and Wii Wheel-specific challenges.

Impatient to get your Brawl on? Some of you North American gamers could get a chance to play Nintendo's all-star fighter as early as this Saturday, when Nintendo kicks off the first of four regional Smash Bros. Brawl tournaments across the United States.

The regional tournaments will take place in Los Angeles, San Francisco, Boston, and New York City, with a maximum of 256 participants at each location. The winners from each tournament will meet in New York for the finals, with the grand prize winner walking away with a crystal-coated Wii, home theatre system, and (of course) a copy of Super Smash Bros. Brawl.

The three finalists will win non-crystal-coated Wii consoles, extra Wii remotes, copies of Brawl, and Best Buy gift certificates ranging from $250 to $1,000. Regional tournaments register players on a first-come, first-serve basis, so we'd recommend getting there nice and early to compete. The first tourney is this Saturday, February 16 in Los Angeles. Full regional tournament details after the break.

The United States Army is working with Microsoft to sponsor the first Halo 3 tournament to be held over Xbox Live. The tournament -- which is sadly limited to U.S. gamers only -- begins in April, and will feature prizes for top players.

Leading up to the tournament, the US Army will sponsor a series of "Basic Combat Training" mini-contests through Xbox Live, where players register and play Halo 3 on certain days in order to win. Registration has already begun for the first contest, entitled "Sniper School," and gameplay will begin on January 19. Registration for the main tournament will begin in March.

We told you it'd be fabulous. Pink Godzilla has exclusively revealed to Joystiq the grand prize for their Pink Godzilla Dev Kit tournament at PAX 2007, and boy is it a doozy. Not only will the winner receive $200 spending money for the Pink Godzilla booth, but the winner also gets to design his or her own video game, to be developed with the help of the Pink Godzilla team, and featured on the Pink Godzilla web site.

In addition to receiving credit as game designer for the project, the winner will also have their game featured as a title card in an upcoming expansion set for the Pink Godzilla Dev Kit card game. Registration for the tournament will be limited, so Pink Godzilla urges players to sign up as soon as PAX begins on August 24th. More details about both the tournament and the prizes after the break.