Tribes: Ascend is a free-to-play first-person shooter developed and published by Hi-Rez Studios for Microsoft Windows, as part of the Tribes series. Aspects from previous Tribes games such as jetpacks and skiing are featured in the game. The game was released on April 12, 2012. In February 2013, Hi-Rez released a Game of the Year Edition, which unlocked all classes, weapons, equipment, and perks in a single package. In July 2013, Hi-Rez halted further development on Tribes: Ascend to focus on other titles, though a small team resumed development in August 2015. In December 2015, Hi-Rez Studios announced a patch for the game which introduced major changes. Due to the nature of the patch, the company reverted all previous in-game purchases.