Hello, After Angry Birds team announced they will release web version on Google IO 2011, now here it is: Angry Birds beta is available on web now, you can play it for free using web browser.
Actually they recommended using Google’s Chrome browser, It’s designed Google’s Chrome web browser, so they specified a domain name:
However, due to our testing, At least you can use IE 9 to run too.
For Firefox final version, we got a screen to ask install newest flash first:
After installation of latest version of Flash, we could also play the web angry birds.
Go fast to try , maybe they will not be free if they release stable version.