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If you’ve stumbled upon a strange balcony on The Grounds or accidentally lit a glowing blue flame inBlue Prince, you may be wondering what it means. You’re not alone. These Blue Flames are part of a puzzle, and lighting all four unlocks a permanent shortcut that’s really handy for your adventure.
This guide will show you how to find and activate the hidden switches for each blue flame, how to solve the puzzles tied to them, and what you can find after lighting all four.

What Happens When You Light The Blue Flames
Once you’ve lit all four Blue Flames,a hidden lift will appear in The Grounds. From the Entrance Hall, head outside and make your way toward the white stairs. Follow the stairs down to the platform where the lift is.
Interact with the control switch to activate it andride down to the tunnel in the Precipice area.Down there,you’ll discover several interesting things, including the Chess Puzzle, which rewards you with a permanent buff based on the chess piece you choose.

How To Activate All Four Blue Flames
To light the Blue Flames in Blue Prince,you need to find and activate four gas switches.Each one is located in a different area:
The good news is that this puzzle isn’t too demanding.Once you activate a Blue Flame, it stays lit even if you start a new day.

First Blue Flame: The Gemstone Cavern
You can find one of the Blue Flame switches in the Gemstone Cavern, just to the left of the campsite. To get there, start at the Entrance Hall, turn left, and go through the gate. Follow the path until it branches: One side leads to the campsite, the other to the Gemstone Cavern.Head toward the Gemstone Cavern and look to your right.You’ll see a gas valve. Interact with it to activate the flame.
If you can’t enter the Gemstone Cavern, you’ll need to solve theUtility Closet Breaker Box puzzlefirst.

Second Blue Flame: The Apple Orchard
You can find another Blue Flame switch in the Apple Orchard.From the campsite, take the path to its left. You’ll come across a white fence marking the entrance to the Apple Orchard. However,the gate is locked, and you’ll need a code to open it.
To get the campsite gate code, you’ll need a Magnifying Glass, and you must have drafted both the Utility Closet and the Dark Room in the same run.Here’s what you need to do to unlock the Apple Orchardin Blue Prince:

The Magnifying Glass appears randomly around the manor. You can buy it from the Commissary or loot it from chests. Often, you can also it in these rooms: Archive, Laboratory, The Nook, Parlor, Security, The Study.
Now that you have the code,enter 1-1-2-8 to the gate’s lock,and you’re in the Apple Orchard. Once inside,look for a small shack. To its left, you’ll find the gas switch.Interact with it to activate the Blue Flame.

If you haven’t already,you can also find the Gardener’s Logbookin the shack, which contains interesting information about the manor’s Green rooms.
Third Blue Flame: The Hovel
Sincethis is an Outer Room, to activate the Blue Flame in the Hovel, you’ll need to:
Fourth Blue Flame: The Schoolhouse
The final Blue Flame is located in the Schoolhouse, another Outer Room.If you’ve already activated the Blue Flame in the Hovel, you know the drill. Here’s what you need to do next:
You won’t be able to activate all the flames in one run, as you can only draft one Outer Room at a time.