Phaser is a free and fast 2D game framework for making HTML5 games
Telegram Bot API for Java
2D GPU-accelerated framework for ActionScript developers
LÖVE is an awesome 2D game framework for Lua
VR Adrix Java Works - Paged Lists - Action-Entity Model ...
SDL library for Android, including several games.
the java game and entertainment runtime
Arianne is an engine to develop multiplayer online games like Stendhal
A Rust framework for building Minecraft servers
Plugin pack for making 2D games with Bevy
A complete framework for Godot to create beautiful and complex AI
Open-source, cross-platform, game-development tools
A continuation of the popular Artemis ECS framework
a 2D Game Development Framework
Build Cross-platform Applications
MMORPG
A Phaser CE plugin that brings sloped tile collision handling
Cocos2d for iOS and OS X, built using Objective-C
The Perfect core toolset and framework for Swift Developers
A Flash Molehill (Stage3D) GPU accelerated 2D game engine