The Undermall

The Undermall is a game about spotting changes in a mall and choosing the right exit. You begin outside the “Warm Subject,” a goth store, and study its contents and layout before entering the “Green Exit.” Each time you return, something may have changed—or nothing may have changed at all.

Spot the changes

Look carefully around the store, then choose an exit. If you find an anomaly, go through the red anomaly door; if nothing has changed, take the green safe door. Changes can be subtle, such as missing jewelry, or obvious, and some may jump out and scare you. There are no audio-only anomalies. A wrong choice sends you back to room 0, a safe room where you can study the store again. Choose correctly 10 times in a row to win.

Customization and settings

You can change your clothing type and color on a character customization platform. The game also includes a speed run overlay that you can enable in the settings, four graphics presets—Low, Medium, High and Ultra—and sliders for mouse sensitivity, music and sound effects. Movement includes walking, sprinting, crouching, jumping and zooming in; pressing Tab triggers an emote.

The game has no story mode or dialogue. Its difficulty is described as medium, with anomalies intended to be noticeable if you pay close attention.