Guard Duty is a humorous retro quest with a side view. The indie project features two-dimensional pixel graphics. Despite the low resolution, the game has hundreds of detailed animations. The title is stylized as representatives of the point-and-click adventure genre from the 90s. It uses the 4 by 3 aspect ratio of old screens.

Guard Duty is full of references to other games. The project uses two settings – fantasy and science fiction. The plot begins in a medieval setting. Then the story develops in the distant future. The narrative is divided into several acts. The main character's name is Tondbert Ruffskin. This guard was assigned to guard the city gates. But while serving, he got drunk on ale in a local tavern. As a result, a mysterious kidnapper entered the castle and stole the princess. After this, the protagonist sobered up and went in search of the girl.

The hero constantly gets into comical troubles, and then eliminates the consequences of his own clumsiness. The gameplay is built around this. Sometimes humorous situations give access to hidden content. For example, at the very beginning the protagonist is stung by bees, which causes his face to swell and his speech to become unintelligible. If, instead of looking for a healing ointment, you start talking with townspeople in gibberish, the unlucky guard will hear unique dialogues. In addition to talking with NPCs, you need to wander around locations and solve riddles of varying degrees of difficulty.