UPDATE May 15th 2011: You can now play Angry Birds online at chrome.angrybirds.com. This is the version made especially for Google Chrome browser and Google’s upcoming ChromeBook but the game works well also on Firefox and Internet Explorer. You can play Angry Birds online for free, no installation required.
Currently there are 3 themes available including Poached Eggs theme and a Chrome-only theme. More stuff is coming soon. The online version of the game is still in beta stage so you can expect some bugs here and there. According to the game download page people from Rovio have already fixed a couple of bugs.

Original article:
If you are looking to play Angry Birds game online I have disappointing news for you. There is no official version of the game available online. There are websites out there which claim that you can play Angry Birds online on their site but that is not true. These sites just try to trick you into clicking and ad or giving out your email so they can spam you with their offers.
Currently you can play Angry Birds on the following platforms:
Desktop/laptop:
- Windows (Vista and 7)
- Mac OS X
- Palm webOS
Mobile:
- iPhone iOS (iPhone, iPod Touch, iPad)
- Symbian version 3 (mostly Nokia phones)
- Maemo (Nokia N900)
- Android
- Windows Phone 7 (coming soon)
Game consoles:
- PSP / Playstation 3
- Xbox (in the works)
- Nintendo Wii (in the works)
Online:
Game rules:
- Pull back the slingshot with your mouse or fingers (depending on what device you are playing the game)
- Aim at the construction’s weak spots. The more you play the game the more you’ll learn what are the weak spots (hint: start with construction joints)
- Release the slingshot and watch the pigs scream! Muahahahaa!
- Rinse and repeat until there is no pig left.
Other info:
Playing games like Angry Birds in a browser is possible due to an amazing improvements in browsers speed in the past couple of years. As Google Chrome Vice President, Sundar Pichai, has mentioned playing Angry Birds in a Chrome wouldn’t be possible even a year ago. Today’s browser is about 10 times faster in rendering image. Well done Google!

{ 10 comments… read them below or add one }
i like angry bird very much.
I downloaded the angry bird app from the chrome store for online, and I can’t even go to level one why is that? it loads but i can;t go nowhere after
thanks jenn
It may be because of your sound drivers. I had the same problem and then I installed the proper sound drivers and everything went well
awesome game eh!
The decades best ‘GAME’ !!!
I <3 THIS GAME!!!!!!!!!!!!!!!!!!!!!
rock on angry birds!!!!!!!!!!
i love angry birds =))
i never play this before =))
<3 it awesome game
***** stars