How do you interrogate a suspect?

Click on the character with your mouse, and the detector starts analyzing their truthfulness.

What does upgrading the detector do?

Upgrades increase the precision of the readings, helping you distinguish truth from lies faster.

What does the player do each turn?

The player selects one suspect for testing and decides whether to spend points on equipment upgrades.

Lie Detector

Puzzle GamesUpdated: July 27, 2026

"Lie Detector" is a browser puzzle where you identify a criminal, not just sort abstract objects. The standout feature here is the mechanic of upgrading the device itself, which changes how you investigate instead of just boosting a score.

You click on suspects to trigger an interrogation, and the device indicates how honest they are. You eliminate those who are clearly lying and move to the others until only one culprit remains. The controls rely entirely on mouse clicks: select a person and wait for the sensor's reading. Every turn you decide who to interrogate next, and once you gather enough points, you invest in an upgrade to see the truth more clearly.

This is a casual time-killer for logic puzzle fans who want to relax without learning complex tutorials. The gameplay is slow-paced, letting you unwind while solving cases.

Tip: in the first minute don't spend on cosmetics, but upgrade the detector's accuracy immediately to filter suspects faster.

How to Play

Click to investigate suspects and upgrade your lie detector to uncover more truths.

FAQ

How do you interrogate a suspect?: Click on the character with your mouse, and the detector starts analyzing their truthfulness.
What does upgrading the detector do?: Upgrades increase the precision of the readings, helping you distinguish truth from lies faster.
What does the player do each turn?: The player selects one suspect for testing and decides whether to spend points on equipment upgrades.