The game was released by Sirvo for iOS on February 6 , 2014 , and ported by indie developer Hidden Variable Studios for Android on March 12 , 2014 . The team chose to release for iOS first due to the small team 's difficulty testing across Android platforms . Hidden Variable also developed an Xbox One version , which was originally announced at Microsoft 's E3 2014 press conference , and released on December 5 , 2014 . The release supports the console 's " snap mode " ( to play in the corner of the screen while the player watches something else ) as well as online leaderboards and a " night mode " darker palette option . A free Windows Phone version was released on April 27 , 2015 , and a free web browser version in December 2015 . The browser release does not include advertisements , unlike the free smartphone releases . In a post-release infographic , Sirvo wrote that the average game length was 20 minutes , even though they designed the game 's sessions to not last longer than 10 minutes . They also reported that 93 percent of players in China used unlicensed copies of the game
E3 2014
E3 2014
Threes