Mechanically, the PSP port embraced scarcity. Batteries for the flashlight were finite and found only in vending machines guarded by animatronics. The map was an unreliable sketch you updated by finding physical map fragments. Hacking a security terminal (a minigame of timing button presses with increasing speed) gave you a precious thirty seconds of camera access or opened a maintenance hatch. Health was permadeath for every run: one fatal encounter soft-restarted you at the last save point—rare, blinking vending machines or immaculately maintained arcade prize booths. Runs were meant to be short but intense, like pocket nightmares.