Orx: Portable Game Engine
Tools and Z80 engine for creating adventure games.
RPG dice roll simulator for vintage Tandy TRS-80 100/102/200 laptops
Low-Level Game Engine for Retro Platforms
creator : Nikola Lukic about : Visual JS 2d canvas multiplatform game
Multi-platform game engine similar to old Megaman with a stage editor
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
A generic 2D engine for any kind of game
A basic 3D environment with a first-person POV
TurboSphere is an easy to learn and powerful JS based game engine.
A Simple Game Engine
a flexible game engine
A very small multi-platform game engine for creating desktop games.
Pig2D is a game engine for Java that uses a sprite-based interface.
Reference implementation for the Doom game engine.