P NP by 7ak is one of the most challenging puzzles I have faced lately.

With an excellent representation of the song in every sense: gameplay, decoration and effects, this level is able to immerse you completely with unusual new features, such as the prime number generator used to add detail to certain parts. However, the gameplay in some sections is slightly inconsistent or even disorienting and rarely the ball from the start dies for no reason.

Despite this, the level stands out to me for its strategic first coin, as I have rarely seen anything similar. I'm sure 7ak did a really good job with it: the level was very difficult, but also a really fun experience.