Prowl
Prowl is an open-source 3D game engine written in pure C using the latest .NET runtime and released under the MIT license. It is designed as a lightweight, Unity-like alternative, featuring a Unity-inspired API and editor designed to feel familiar to Unity developers while following KISS principles to remain small and customizable. The goal is to enable straightforward porting of Unity projects. Key features include cross-platform support for Windows, Linux, and Mac, C scripting, and a GameObject and Component-based architecture. It includes a full editor with support for editor scripts and custom editors, built on a custom UI library that powers both in-game and editor interfaces with immediate mode rendering and retained properties. The engine includes 3D drawing within the UI for gizmos and integrates Jitter Physics 2 for physics simulation. Built on .NET 9, Prowl is currently in early development and is not yet production-ready, but it is actively developed with community contributions encouraged.