How to solve VAC Indicators in Blue Prince. It’s easy once you know the right light sequence

It seems like there's always a surprise hit on Steam every week, but it’s been a while since a great puzzle game like Blue Prince came around. This indie title hit over 7,000 concurrent players in under 24 hours and is getting positive reviews, though some aren’t fond of the RNG aspect. But let's focus on what you came for: the Vac Indicators puzzle. It's pretty simple once you know where to find the clue.

• How to get clues for Blue Prince VAC Indicators puzzle
• Blue Prince VAC Indicators puzzle solution

How to get clues for Blue Prince VAC Indicators puzzle

In the Utility Closet, there's a fusebox with six lights that need to be set to the right colors to solve the puzzle. The clue for this is split across two rooms. First, head to the security room and check the noticeboard. Interact with it and use the magnifying glass to read the Terminal Password note – which will be SWANSONG. But since I just told you, you can skip that part.

Next, head to the office room and log into the computer with the password. Check the emails, and the second one will give you the correct light sequence:

1. Off, Blue, Green, White, Red, Purple.

Now, the tricky part. Turning the light white isn’t as simple as it sounds. The tip for this is in the fourth email. To make one of the lights white, you need to first turn all of them purple.

Blue Prince VAC Indicators puzzle solution

Head to the Utility Closet, open the fusebox, and follow these steps. Remember, changing the color to Off will also affect the adjacent ones, so be careful:

1. Start with the first light (the one from the left side) and turn it Red.
2. Turn the second light Off, and the first light will turn Purple.
3. Now, turn the second light Red and turn the third light Off. Follow this pattern to turn every light Purple (the last light will turn Purple after you turn it Red and click on it once more).
4. Now click on the fourth light – it should turn White, while all other lights remain Purple.
5. Turn the sixth light Red. The fifth light should be Blue.
6. Turn the fifth light Red, and the sixth light should be Purple.
7. Turn the third light Green. The adjacent light will turn Blue.
8. Turn the first light Off.

If you follow these steps correctly and the light sequence is Off, Blue, Green, White, Red, Purple, the doors behind the fusebox should open.

Blue Prince

April 10, 2025

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• Overview

• puzzle games
• adventure games
• indie games