Godot Minimal Theme
Free game engine for development of desktop, mobile, and web games
3D and 2D game engine written in Rust
3D Game engine with editor
Cross-platform 2D game engine focused on ultimate productivity
Stride (formerly Xenko), a free and open-source cross-platform C# game
The Tiny JavaScript Game Engine That Can!
Ct.js is a desktop game engine that makes learning programming fun
The flexible game engine
Cocos simplifies game creation and distribution with Cocos Creator
Magic Another Game Engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
A fresh & lightweight javascript game engine
Cross-platform 2D and 3D game engine with modular architecture
An OpenGL RTS game engine written in C
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Descent 3 by Outrage Entertainment
SDL based generic 2D game engine
All-in-one game engine built on Godot. Roblox & UEFN alternative
Injectable LUA scripting system, SDK generator, live property editor
MIT Licensed Open Source version of Torque3D from GarageGames
A cross-platform, open-source, pure C game engine for mobile game