This isn't about fire and brimstone. In this context, "Apocalypse" refers to the unveiling (the literal Greek meaning of apokalypsis ). It signifies the moment the "simulation" drops and true reality begins.
This paper asks: What would that code contain, and why is it necessary? i--- Apocalypse Lovers Code
In the year 2251, the concrete jungles of the old world are buried under thick, glowing moss and flowers that sprout from the skeletons of civilization. You wake up in a flickering shelter, your sanity frayed by the constant, inhuman "thrumming" that echoes through the vines outside. This isn't about fire and brimstone
Because the title is cryptic, I’ll interpret it as a possible reference to: your sanity frayed by the constant