Cocos simplifies game creation and distribution with Cocos Creator
The ioquake3 community effort to continue supporting/developing id's
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
A game framework written with osu! in mind.
Open source library for creative expression on the web, desktop, etc.
SDL based generic 2D game engine
Ze Text Adventure game Builder : Create as you play !
Murder is a pixel art ECS game engine
Retro game engine for creating games like it's 1997
A high speed C++17 Vulkan game engine
Vivid is a modern C++ 3D engine using OpenGL4+
A 2D game engine and level editor
IGS Labs
The Atomic Game Engine is a multi-platform 2D and 3D engine
creator : Nikola Lukic about : Visual JS 2d canvas multiplatform game
Open-source, cross-platform, C++ game engine for creating 2D/3D games
Mahasona engine is an open source game engine.
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
A simple WinAPI game engine