Google launched another Google Doodle guessing game Tuesday, with a new interactive Google logo that you can manipulate with your mouse. Google replaced its static logo with a set of dynamic colored balls that make up the Google logo. Move your mouse pointer near the logo and all the balls disperse and don’t settle down until the pointer stops moving.

It’s a lot of fun to try out, and will most likely be blamed for another dramatic dip in worldwide productivity. Another neat trick you can do is to get the balls to move by shaking your browser window.

It’s not clear what prompted Google to launch the playful design, but many are guessing it’s a celebration of Google’s anniversary. The company was incorporated on September 7, 1998.

Softpedia points out that Google’s logo is a JavaScript-based particle movement simulator, suggesting the logo may be in honor of a scientific achievement or notable personality. You may remember that Google released a series of sci-fi related Google Doodles in September 2009 to celebrate the 143rd birthday of author H.G. Wells. So this may be the first doodle in a series of tributes just like last year.

Whatever the occasion for Google’s new Doodle, the search giant’s design team has also used the occasion to show off the capabilities of modern Web technologies. The logo uses HTML 5 and JavaScript to create the particle simulator effect.

This is the fourth interactive design that Google has used on its front page.

(Source: PC World)