Java/JavaFX/Kotlin Game Library (Engine)
Arianne is an engine to develop multiplayer online games like Stendhal
Godot backend for video games based on Valor TTRPG
Game engine to build text adventures.
GemRB is a portable open-source implementation of the Infinity Engine
Simple 3d Top-Down Shooter & Free 3d Board Game
Action RPG that's easy to mod
Cross-breeding a 3D FPS with a fantasy RPG in the world of Hexen
Updated emulator of Forgotten Realms: Unlimited Adventures
Heros of Jin Yong 3D Remastered
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Parabator 3 - Rush of the Wind 1.4.3 (Xtreme3D Engine) Free board game
Attention! This tiny board/shooter game just created for fun
Parabator 3 - Rush of the Wind - Free 3d board game / license lgpl
General Purpose Engine for Graphic Adventures.
2D Game Engine
RTSish Game Engine
A RPG maker engine using Pygame
RPG dice roll simulator for vintage Tandy TRS-80 100/102/200 laptops
Remake of The Secrets of Dyrt
A fast, scalable, distributed game server engine/framework for C++