Built from the ground up to be "moddable to extremes," allowing the community to add new planes, parts, and maps via a dedicated SDK. Evolution to Kitbash Model Club

The simulator features an advanced vehicle editor that allows players to snap together parts, paint designs, and apply decals to create unique RC models.

A free-flight environment for testing designs without restrictions.

is a specialized physics-based sandbox game that focuses on the detailed design, construction, and piloting of remote-controlled (RC) aircraft. Developed by Floating Origin Interactive, the team led by the original creator of Kerbal Space Program (KSP), it was recently rebranded and expanded as Kitbash Model Club .

Following its Early Access period, the developers shifted focus to Kitbash Model Club, which incorporates a redesigned "Internal Physics" system to reduce part "wobble" while maintaining realistic structural stresses. This new version expands the scope from just airplanes to include land and sea vehicles. Balsa Model Flight Simulator - Official Trailer

Unlike standard flight simulators, Balsa uses a complex physics-based flight model where every design choice—including small changes to geometry—directly impacts performance and aerodynamics. Diverse Game Modes: