EVERY DECISION DECIDES WHO SURVIVES

Shelter Security: Gatekeeper Simulator, a puzzle simulation game, places you at the most critical position after the collapse of society: the shelter gate. Your mission sounds simple; you need to let humans in and keep threats out. However, appearances are deceiving. Mutants disguise themselves as ordinary people, and bandits hide among desperate survivors. One wrong decision could put everyone inside the shelter at risk. Start the game now!

A World Where Details Matter

At the gate, people arrive one by one, each with a story, a look, and subtle clues that reveal their true nature.

Some are genuine survivors seeking safety. Others are far more dangerous.

Mutants often look human at first glance, but their extra limbs give them away. Watch closely for unusual ears, tails, wings, or unnatural body features.
Bandits may pretend to be innocent residents, but their outfits tell another story. Leather jackets, spiked clothing, and suspicious accessories are red flags you cannot ignore.

As the game progresses, these disguises become more convincing.

Weapons Reveal Hidden Threats

Bandits do not rely on appearance alone. Many carry weapons that expose their true intent.

Pay close attention to items such as:

Hidden knives or blades.
Firearms tucked under jackets.
Improvised weapons carried too confidently.

Spotting weapons early can be the difference between safety and disaster.

Rising Pressure, Tougher Choices

In the early stages, the line is manageable, and decisions feel clear. But as time goes on, more people arrive faster, and threats become harder to identify.

You must stay sharp and focused, because:

The number of people to inspect increases steadily.
Visual clues become more subtle.
You are only allowed three mistakes before the shelter is compromised.

Every wrong choice brings you closer to failure.

Why Shelter Security Feels So Intense

In this game, you never know who to trust, and there is no single rule that guarantees safety. The challenge grows naturally, forcing you to adapt, stay alert, and rethink your assumptions with every new arrival.