Fear not, it's just Pac-Man and your website is not hacked! Yes, Pac-Man is relieved again!
A check around the net leads me to this. Apparently the team at Google is commemorating the 30th anniversary birth of the world famous game, Pac Man in Japan. Back then, it was called Puck Man - a name many rejected due to its close resemblance to the F-Bomb word. For three decades, it has amused millions of people around the world who try to work around the game, to ensure the little Pac-Man eats all the cherry bombs to score points, while avoiding the hungry ghosts.
A check on an article at DailyNews365, the man behind the concept is Marcin Wichary, a Google senior user experience designer and he is also a Pacman lover and Ryan Germick, the Google logo artist.
CNet also carried a news article about the frenzy that Google has created. The game is not just a gimmick display, but it is a fully-playable version of the game, complete with 255 levels and re-created (but authentic) sounds and graphics. To end it all up, the final 256th level of 'kill-screen'. Not only that, view the screen game carefully, the sectional walls eventually form the world Google on it.
Watch the video below:
In the end, Happy Birthday, PacMan...