The Plucky Squire centers around Jot, a storybook character who finds himself thrust into a 3D world outside his book. The primary mechanic involves switching between 2D storybook pages and the 3D 'real world' environment. In 2D, Jot navigates like a classic platformer, often solving puzzles by interacting with the page itself. In 3D, the game shifts to an action-adventure perspective, allowing for exploration, combat, and interaction with real-world objects.

Key mechanics include:
- 2D/3D Transition: This is the game's signature feature. Jot can jump out of the book into the surrounding environment, and vice-versa. This is often used to solve environmental puzzles or bypass obstacles.
- Combat: In both 2D and 3D, Jot will encounter enemies. Combat is generally straightforward, involving basic attacks and dodges. Specific mini-challenges may introduce unique combat scenarios, such as 'boxing badgers'.
- Puzzles: Puzzles are integrated into both 2D and 3D sections, often requiring creative use of the world-switching mechanic. Pay attention to details in both environments for clues.
- Mini-Challenges: The game features a variety of delightful and surprising mini-challenges, from flying with a jetpack to other unique scenarios. These often test different skills and keep the gameplay fresh.