Sand Vault: Escape from a Buried Vault
In Sand Vault, you lead your character through a buried vault and past guards. It's a 3D top-down adventure game where you have to read patrol routes, collect all the keys and get to the exit gate. Each of the 16 chambers adds a new move to the puzzle.
How to start an escape
First, study the route of each guard. Then enter an open corridor and stay out of line of sight. Then collect keys along the way and don't linger at open passages.
What changes in 16 chambers
There are 16 hand-built cameras in the game, and each one introduces a new twist to the rules of stealth. The same calculation of moves is needed in Backrooms: you also count turns in advance so as not to go to the guard in the open corridor. If the guards notice you, you will no longer be able to reach the gate.