This isn't a game. This is a trainer. This app is trainer of reaction and it will help you improve your sniper skill. This app based on popular on-line action shooter Counter-Strike and it will help you improve your reaction skill required for a successful play.Whis this app, you can improve your reaction skill anywhere you want (home, school, workplace, on the road, or traveling). It recommended to play forefinger. cs. CS. Counter-Strike.CS:GO. global. offensive.