Introduced in the spring alongside the Galaxy S7 and S7 edge, Samsung's Game Launcher has been made available to last year's flagships. That means users can now game uninterrupted on their Galaxy S6, Galaxy S6 edge, Galaxy S6 edge+ or Galaxy Note5 too. Game Launcher lets you disable the less urgent alerts so you can focus on the obviously more important task at hand. Game tools, on the other hand, provides a tiny bubble shortcut, giving you access to screen capture and toggles for disabling the Recent apps and Back keys, plus the option to disable notifications on a per-game...
Source: http://www.gsmarena.com/samsung_game_launcher_makes_it_to_the_galaxy_s6_and_note5-news-19902.php