Game engine supporting many 3D/2D formats and graphic effects
Java/JavaFX/Kotlin Game Library (Engine)
Engo is an open-source 2D game engine written in Go
Orx: Portable Game Engine
Cross-platform 2D game engine (+ full OpenGL, +full OpenGL ES )
Space shooter style game arcade version - Games/Entertainment Software
2D Game Engine
games for kids
ZED OS the clone of Windows XP
A cross-platform 2D game engine
Cross-platform 2D and 3D game engine
A 2D game about Bunny and coronavirus
Paintown is a 2d fighting game engine.
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
2D physics engine for games
C-Lesh is a game programming language for 2D games.
Cross-platform 2D game engine