Realy nice concept,
once I understood the mecanism I started to realy enjoy it !
But the 4 paterns at once is maybe a little too hard for me (not managed to do more than 6 ...)
If you plan to continue it, maybe a good way to manage progression curve is to starts with 2 paterns at once, then 3, 4 and more. another way may be to give a little more time to enter the codes.
Anyway a great game, super polished, realy juicy, good job !