Gamurs - A social network for hardcore gamers
Cyberix3D - Free online 3D Game Maker. Make your own 3D games online!
Scratch - Scratch is the programming language & online community where young people create stories, games, & animations.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Kamcord - Live stream anything on your phone's screen
Open 3D Engine - Open 3D Engine is an open-source 3D game development engine in real-time.