Cyberix3D - Free online 3D Game Maker. Make your own 3D games online!
CodaKid - CodaKid is an online kid’s coding academy offering coding courses for kids, Minecraft modding, Robox coding, and video game programming courses.
Open 3D Engine - Open 3D Engine is an open-source 3D game development engine in real-time.
Tynker - Game Worlds for Kids to Learn Programming
Castle Game Engine - An open-source 3D/2D game engine for ObjectPascal.
CodeCombat - Learn programming with a multiplayer live coding strategy game.