Voxel game-creation platform with easy modding and game creation
Xash3D FWGS engine
The game engine for everyone
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Cocos simplifies game creation and distribution with Cocos Creator
Open-source engine for Heroes of Might and Magic III
Cross-platform game engine in Rust
Open source library for creative expression on the web, desktop, etc.
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
A dead simple 2D game engine for Go
The Tiny JavaScript Game Engine That Can!
A completely free, open-source, 2D game engine
Python MUD/MUX/MUSH/MU* development system
Full featured MUD server with all the trimmings.
Game engine supporting many 3D/2D formats and graphic effects
Embeddable unity game engine view for Flutter
Free, open source game engine online
The multiplayer game engine
Engo is an open-source 2D game engine written in Go
Open source reimplementation of GTA San Andreas game engine in Unity
2D Game Engine
3D playground built on three.js and cannon.js
A cross-platform 2D game engine
online 4X browser game engine