Puzzle Boy

Kwirk has three game modes: Going Up?, Heading Out?, and Vs. Mode, each one with its own set of rules. The object is to get from one end of the room to the staircase on the other by rotating turnstiles, moving blocks, and filling holes with blocks.

The game has three skill levels: Level 1 - Easy, Level 2 - Average and Level 3 - Hard. One of two viewpoints may be selected: Diagonal or Bird's Eye. In Diagonal view, characters and blocks have shadows and appear in crude 3D, whereas in Bird's Eye view everything is 2D, viewed from the top down. The three skill levels and two viewpoints are featured in all three game modes.

Kwirk and his girlfriend Tammy were both out "painting the town red" when they decided to explore the unnamed city's subterranean labyrinth below. While down there, Tammy suddenly disappears and Kwirk, with his Veggie Friends, now has to find her in the labyrinth and bring her home.

In the original Japanese version of the game, the player character is an anthropomorphized potato called Spud. This was changed to a tomato named Kwirk for the US release. In both releases, the character Kwirk has set out to save is a tomato.

Kwirk received largely positive reviews. Reviewers praised the game's challenging difficulty. According to Mean Machines, which rated the game a score of 85%, Kwirk is one of the "simple, but very addictive" puzzle games, as stated by Julian Rignall. Because of the number of different screens, it doesn't "become boring quickly".

Rignall stated the game gets "incredibly hard" and "really taxes" the player's brain. Matt Regan criticized that once the player has solved each puzzle, there is "no interest left". The German magazine Video Games reviewed Kwirk in its first issue and awarded it a "Video Games Classic" due to a score of 85%. The magazine's editor Stephan Englhart praised the game's variety of modes and puzzles.