Phaser is a free and fast 2D game framework for making HTML5 games
A re-implementation of Freelancer
Dedicated Game Server Hosting and Scaling for Multiplayer Games
Framework to facilitate communication in the Unity game engine
Godot game template and component-based framework
3D game engine/framework in C, with Luajit and Python bindings now
Easy to use Python library for creating 2D arcade games
The HTML5 Creation Engine
RenderDoc is a stand-alone graphics debugging tool
Ct.js is a desktop game engine that makes learning programming fun
This software is a particle effect editing tool
Orx: Portable Game Engine
Multi-engine plugin to specify agents with reinforcement learning
CGL (C Game Library) is a multipurpose library
Framework for creating human behaviour experiments in Unity
SonarSource Static Analyzer for Java Code Quality and Security
Compiler from Go to JavaScript for running Go code in a browser
A Logo-like 3D environment, implemented in Nim
Arianne is an engine to develop multiplayer online games like Stendhal
maXbox is a script tool engine, compiler and source lib all in one exe
Pycraft is an open-source, OpenGL based game made in Python
Full featured MUD server with all the trimmings.
Modding CLI tool kit for Amnesia: The Dark Descent
Tools and Z80 engine for creating adventure games. (RUST)