I liked the idea, it reminded me of Keep Talking and Nobody Explodes. It could probably do with a little more instruction though, the fact that the keys highlight on the keypad before you're even supposed to interact with it isn't great UX. I also could not for the life of me figure out how the green lights were supposed to work. Do I just follow the pattern of the lights and click when one lights up? Or do I try to replicate the pattern originally shown? It's very hard to tell. Overall though, this was a nice entry :)