Free, cross-platform 2D game engine powered by Haxe and OpenFL
A dead simple 2D game engine for Go
Cocos simplifies game creation and distribution with Cocos Creator
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Sandbox video game with a powerful physics engine
A J2ME emulator for Android
Multi-platform 2D and 3D game engine
Desktop/Android/HTML5/iOS Java game development framework
One framework for creating powerful cross-platform games
Cross-platform game engine in Rust
Open source library for creative expression on the web, desktop, etc.
Orx: Portable Game Engine
Source of Mana is a unique 2D MMORPG
Cross-platform 2D game engine (+ full OpenGL, +full OpenGL ES )
Everything you need to build and deploy scalable realtime 3D apps
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
Cross platform SDK
Android apps.
Space shooter style game arcade version - Games/Entertainment Software
games for kids
2D Game Engine
ZED OS the clone of Windows XP
A cross platform Lua based game engine
Cross-platform 2D and 3D game engine
A 2D game about Bunny and coronavirus