Angry birds push pop

Angry birds push pop is an online version of the Angry birds game where you unlock levels from codes from on the sides of Push pops. It was first introduced in 2013.

Updates
2/18/2016 : They changed the logo to match the Angry Birds rebranding that happened in 2015.

Trivia
"This was the last Angry Birds game to still use the old logo, until 2016 after the update."

successor
It was followed up by Angry Birds Space Push Pop