The stages inVampire Survivors,with the exception of the Inlaid Library, are all similar in setup. The player is free to roam in any direction as far as they wish; in the Inlaid Library, on the other hand, movement is (mostly) restricted to left and right. One of the two new stages added toVampire Survivorsin the last update, the Hidden Ground, has a unique layout.
The Hidden Ground (also called the Holy Forbidden) is a long winding passage that forces the player to travel to the right. The goal is to make it to the treasure at the end of the passage — the Yellow Sign relic.

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Unlocking The Hidden Ground
Unlocking this stage is done byplaying the Moonglow stage with a non-secret character; options includes Exdash,Toastie, Boon Marrabbio, Leda, and Red Death. If the player makes it to minute 14 with one of the standard characters (excluding Gallo and Divano) the screen will begin going into a tunnel vision view. The edges of the screen will begin to warp.
Instead of Death appearing at the end of the stage to kill the player, their character is warped to the Hidden Ground. This is done without warning, and after appearing the player-character isstripped of all their weapons and accessoriesexcept for their starting weapon. This only happens the first time the player makes it to the end of the Moonglow stage. After this, The Hidden Ground is accessible in the Stage Select screen until the player retrieves the Yellow Sign. After obtaining the Yellow Sign, the Hidden Ground is no longer accessible.

The Hidden Ground
This stage has a time limit of five minutes, and as stated above, the character only has their starting weapon. The character does not even benefit from any global Power-ups the player has purchased,or Arcanas. Also, the character cannot gain levels in the Hidden Ground. That’s not the end of it either; thegame cannot be pausedwhile playing the Hidden Ground.
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As the player navigates the passage, they are constantly under attack from bats and angels. There is also a boss that will follow the player and periodically attack. The lack of weapons ensures the character will take damage while traveling through the Hidden Ground. Fortunately, the passage has light sources that can drop Floor Chicken. For this reason, it’s best to use a character witha direct-fire weapon; Gennaro, Antonio, Pugnala, Poppea, and Ramba are all good picks for the Hidden Ground.Pugnala and Poppea are probably the best picksdue to their boosted movement speed.
When the player nears the end of the stage there will be a Rosary on the ground; picking this item up will reveal the boss' true form and send it running. At this point the player needs to continue moving to the right and collect the waiting Yellow Sign in the column of stained-glass windows.

The Yellow Sign
TheYellow Sign unlocks four new accessories: Gold Ring, Silver Ring, Metaglio Right, and Metaglio Left. These are needed to evolve the Clock Lancet and Laurel (respectively). Evolving these two weapons for the first time unlocks the two new characters, Gallo and Divano.
Vampire Survivorswas released on Dec. 17th, 2021, for the PC and macOS.