It's The PacMan 30th Anniversary

May 22, 1980 marked the release of one of probably the most legendary video games of all time, and May 22, 2010, can be the Pac-Man 30th anniversary. It is one of one of the most popular video games ever released. The PacMan game is one of the 3 video games exhibited by the Smithsonian Institute. In fact, Google put a PacMan free online game within the homepage.
 

May 22 is Pac-Man arcade game 30th anniversary
PacMan 30th anniversary marked by

A PacMan display was used for the Google logo on the homepage, called a Google Doodle. It also is a functioning game. It really plays. You’ll notice the Insert Coin button on the Google homepage. Click it, and you can play Pac Man until you’re blue in the face, without having to dump instant cash into subscribing to gaming websites or a quarter machine.

PacMan is now 30

The original release, as outlined by the Pac Man wiki, was May 22, 1980 in Japan. The developer was Toru Iwatami, when he worked for Namco Games. (He didn't get a share in the sales or even a bonus for creating it.) At the time, the popular video games were all typically Asteroids or Galaga-type games, and he came up with an option. The game was a near instant hit, and it was picked up by Midway Games soon after for distribution within the US. The horizontal Pac Man table is nevertheless a highly sought after collector’s item.

Play Pac Man

Obviously, there’s the free version of the game on the Google homepage. There are PacMan games all on the internet, which is a series of tubes according to sources. There's an Apple app, that you can download PacMan with for the iPod Touch, iPhone, and probably the iPad. It is an icon of video games, and on its 30th anniversary, Pac Man is nevertheless incredibly popular.

Citations

Pacman wiki

http://en.wikipedia.org/wiki/Pac-Man