Metal Gear Solid: The Temperature Key Puzzle Solution
The original stands the test of time as one of the most important video games ever made, but dated puzzles like the Temperature Key will leave you struggling to find a solution. Also known as the PAL puzzle, this can be a genuinely confusing riddle, unlike the challenges of similar mysteries like the CD Box. The obtuse tasks surrounding the Temperature Key are anything but straightforward.
After defeating bosses like Psycho Mantis in , you'll eventually reach Metal Gear REX and grab a PAL key needed to deactivate the nukes. The key is found in the command office and is yellow-colored when you look at it. Your mission here is to change the temperature of the key so that it changes color twice, then return to the office and interact with the command console two separate times.
You have to leave the command office and return two times, once for every time you change the PAL key temperature.
Related: The 15 Best Metal Gear Solid Games, Ranked By Metacritic
To change the PAL key to Blue, you need to expose it to cold temperatures, which are thankfully easy to find close to Metal Gear REX. Return to the area where you foughtVulcan Raven, then wait for the key to turn blue after a short time. Checking the Item Menu will let you see if the PAL key has changed colors as you avoid guards and other enemies in .
Related: «No Better Entry Point» — Metal Gear Solid: Master Collection Vol. 1 Review
Once the key turns blue, return to the top of Metal Gear REX to the command office and use the key on the computer. Be careful since enemies repopulate this spot each time you return from altering the PAL key's color in. There are gun turrets near the entrance, along with two cameras that will lock the doors to the office and summon
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