Godot is a powerful cross-platform game engine
Real Time Strategy game engine supporting early Westwood classics
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open game and rendering engine packed into a JavaScript framework
3D game engine/framework in C, with Luajit and Python bindings now
A game framework written with osu! in mind.
Open source library for creative expression on the web, desktop, etc.
Cross-platform game engine in Rust
Game/Scene Development System
Old-school 2D game engine
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented
Amateur 3D Game Engine
An isometric arcade-style game of skill, puzzles and exploration
utility collection for 2D game development in Java; sound-player
Vivid3D is a C++ IDE/3D engine, with python scripting.
A simple cross-platform game engine for creating old-school 2D games
Orx: Data-Driven Game Engine
SDL based generic 2D game engine
Game engine supporting many 3D/2D formats and graphic effects
Ze Text Adventure game Builder : Create as you play !
PyCAPGE - Python Classic Adventure Point and Click Game Engine
A free 3D game engine to create games and realtimes scenes for Windows
Vivid3D is an open-source 3D engine with powerful 2D UI.
MIT Licensed Open Source version of Torque3D from GarageGames
A high speed C++17 Vulkan game engine