When you begin to master it, Klang 2 is unbelievably engrossing. Your eyes will be darting around the screen scouting the next target as you enter a kind of zen-like trance, and the amazing quality of the soundtrack plays into this superbly well. The way that the patterns can change from turn to turn is refreshing, as it makes mastery more dependant on skill than your ability to memorise the buttons, but it can lead to intense frustration when you are struggling to work out your timing. Stick with it, though, and Klang 2 is a very rewarding experience.
Source: N4G PC Klang 2 Review: Intense EDM Rhythm Action – Total Gaming Addicts