Star Wars: Galaxy of Heroes is a mobile game developed by Capital Games and published by Electronic Arts. The game received a soft launch in Australia during October 2015, and was formally released on November 24, 2015. Galaxy of Heroes was announced at the 2015 E3 Expo, where it was announced as a collectible card game RPG.
Gameplay for Galaxy of Heroes allows players to collect characters from the Star Wars universe, create teams with them, and use them to fight battles. There are multiple ways to collect characters: some are given to players immediately, whereas others are gained via game play or as in-game rewards.
Source: Wikipedia, "Star Wars: Galaxy of Heroes", available under the CC-BY-SA License.