Torque 3D

Includes a built-in world editor, terrain tools, and real-time lighting, providing a complete development environment without external dependencies, as highlighted in the key features.

Released under the MIT license, it allows free commercial use and modification, eliminating royalty fees, which is a core value proposition.

The engine has a built-in networking framework, making it suitable for developing multiplayer games without additional middleware, as noted in the features.

With origins in GarageGames and a long history in shipped titles, it offers a stable, production-ready foundation for game development.