Chrome Dimension

Chrome Dimension is an episode of the original Angry Birds, only seen in the online Google Chrome and Google+ versions of the game. Chrome Dimension doesn't appear in any other version, and unlike other episodes of the original game, doesn't require the completion of previous episodes to unlock.

Initially, all of the levels of this episode are unavailable. To unlock them, the player must look for Chrome Symbols hidden in the normal episodes. There are seven symbols hidden within Poached Eggs, three within Mighty Hoax, and four within Danger Above. The Chrome Symbols are analogous to Golden Eggs in the full version of Angry Birds. Finding one of these symbols will open up a level in the Chrome Dimension, which contain various colored blocks with images based on commands/buttons from Google Chrome, and boulders and bombs with the Google Chrome Logo (the later serving as the TNT Crates in the episode).

Trivia

 * The word "Chrome" in the episode's title is a reference to Google's current downloadable web browser, known as the Google Chrome. The entire episode itself contains mentions to Google Chrome, per above.
 * Many background objects have the Chrome Symbol on them, such as flowers and clouds.
 * Despite the game being called "Chrome" Dimension, you do need to use Google Chrome to play this episode. You can use Internet Explorer and Safari etc.
 * If you find all the levels, you will notice the glow, and the King pig will be hiding behind a cardboard cutout of the Chrome logo instead of a cardboard cutout of himself.