Rovio Entertainment Ltd. is an Android developer, who started in 2010, and thus is one of the Android pioneers. The current app portfolio contains 28 apps, most of which are games. In the Google rankings, Rovio Entertainment Ltd.'s apps appear in the top 100 in more than 10 countries. Some important apps are Angry Birds
, Angry Birds Rio
, Angry Birds Seasons
, Angry Birds Space
, and Angry Birds Star Wars
. All of them have been installed more than 100 million times.