A stroll in the garden could lead you to the final room.

The Secret Garden in Blue Prince is a rare room you can’t find without the special key, and it has a puzzle that holds the answer to opening the locked antechamber room to reach the final room. But it is difficult to stumble upon the key, so we’ve a guide for you to find and use the Secret Garden key in the game.

You can find the Secret Garden Key in Trunks, which have a random chance of spawning in bedrooms and other rooms. I found two Trunks in the Bunk Room, and that’s where I came across the Secret Garden Key in one of the chests. The key is a very rare spawn, so it only appears in a few chests. The best way to get it would be to search rooms with locked Trunks and open them up to find the Secret Garden Key. My chest with the special key only contained that reward, so you won’t get anything else, like gold, from it once you find it.

You can’t use the Secret Garden Key to open Trunks or regular doors, unlike the regular keys. To use it, make your way to the eastern rooms until you find a locked room. Once you try to open the drafting menu to select the room, you will get the Secret Garden room, a rare green room with a fruit spread. Select that, and you can use your Secret Garden Key here to open the door and enter the area. You won’t be able to use your normal keys here, so if you don’t have the special key, don’t draft it as it will just become a dead end in your run.