A modern cross-platform low-level graphics library and rendering framework

A high speed C++17 Vulkan game engine

Nebula is an open-source and free-to-use modern C++ game engine.

id Software's Quake 2 v3.21 with mission packs and Vulkan support (Windows, Linux, macOS, FreeBSD, Raspberry Pi 4)

A new 3D game engine for Linux and Windows using C++20 and Vulkan API 1.3, in very early but ongoing development

Lina Engine is an open-source , modular, tiny and fast C++ game engine, aimed to develop 3D desktop games.

OpenGL/Vulkan Java 3D Engine

Hotham is a tool for creating incredible standalone VR games.

Sample projects demonstrating the usage of Diligent Engine

An OpenGL / WebGPU engine for Desktop JVM, Android and Javascript written in Kotlin

A 3D engine with ECS and Vulkan renderer for Rust developers

Miku fan-made free MikuMikuDacne renderer

3D Renderer Engine builds with Vulkan and C++ 20

Vulkan based game engine

API abstraction layer for 3D graphics, UI and sound. Written in C++17 with Vulkan, DX12 and Metal support.

Swift 3D Game Engine for Windows, macOS, iOS, Linux

A very simple real-time Vulkan 3D game engine

Open source game engine version developed by Croteam for Serious Sam Classic with Vulkan support (Windows, Linux, FreeBSD, OpenBSD, macOS, Raspberry Pi OS). Based on /~https://github.com/sultim-t/Serious-Engine-Vk and linux port /~https://github.com/icculus/Serious-Engine

A C++ prototyping engine that is striving for an easy to use API, hiding all the dirty details so that you don't have to care.

Mocha: A work-in-progress 3D game engine