GemRB is a portable open-source implementation of the Infinity Engine
Motor de juegos de aventura programable
RTSish Game Engine
Godot backend for video games based on Valor TTRPG
2D Game Engine
RPG dice roll simulator for vintage Tandy TRS-80 100/102/200 laptops
An open source re-implementation of Diablo 2
A fast, scalable, distributed game server engine/framework for C++
Opensource Game Studio
Real-time RPG for PC/tablet/phone; multiple quests and random dungeons
A space race game in the style of A Dark Room
The second demo of my game engine.
An advanced RPG-specific Game Engine
Built to be ease of use, with no programming knowledge, Multi-platform
XNA based game engine completely written in c#
A roguelike game engine/editor
A 2D Adventure Game & Engine
TurboSphere is an easy to learn and powerful JS based game engine.