In Flyout, players utilize in-game modeling tools to create custom aircraft, allowing for freeform fuselage design, engine configuration, and control surface setup. The game emphasizes realistic flight mechanics, where the shape and design of the aircraft significantly influence its performance.

The storyline of Flyout is centered around the player's journey as an aircraft designer, exploring a vast, procedurally generated planet while testing their creations in various flight conditions. Players can experiment with different designs and configurations to achieve optimal flight performance.

Flyout stands out with its comprehensive editor tools, including customizable engines, landing gear, and control surfaces, alongside modding support for importing custom models and textures. The game also features a realistic atmosphere model, enhancing the simulation experience.