"Puzzle Box" is a song by Haken about the feeling of being trapped, either by life or one's own thoughts and feelings. The lyrics portray someone trying to escape the "cave" that is trapping them, and trying to understand the truth about their current situation. The "puzzle box" of the title is metaphor for this mental and emotional prison, as the protagonist attempts to solve the seeming paradox of feeling both trapped and searching for freedom. The song explores feelings of guilt, regret, and a sense of helplessness, while simultaneously hinting that the answers may lay inside the box itself. The chorus summarises this struggle, as the protagonist is kept trapped by guilt and paralysed by fear, unable to find the answers that will lead to freedom. Ultimately, the song underscores the idea that growth and progress can only be found through facing our own fears and that truth will eventually set us free.