[viraptor]

I never got that one. Who is it for? When you're playing a game, you're not looking at the keyboard. And with just the few buttons available covered by your hands, it's not really for others... Why is the game-layout lighting a thing?

[ksk]

Its mostly aesthetics. It could be useful if you come back to a game after a break and you forget some of the keys. I can see its use as a training mode too.