Godot

Godot turns up in postings from small teams, in prototyping and in tool building, and the reasons are usually practical. The engine is small enough to read, the editor itself is a Godot application, so custom tools and plugins are written in the same language as the game, and nothing in the licence depends on revenue. Requirements name GDScript, often C# as an alternative, the scene and node model, signals, and the export templates for the target platforms.

Jobs that mention it tend to ask for breadth: one person who sets up the project, writes gameplay code, builds a small tool for the designers and keeps the HTML5 or mobile export working. Rendering work brings in the engine's own shading language.

Unity and Unreal Engine dominate larger productions and carry more third-party middleware. Godot postings are where engine source access and a short path from idea to running build matter more than the size of the ecosystem.