BlitzMax - With the developing version BlitzMax NG other 'targets' are available: ARM architecture, Raspberry, Android, HTML (Emscripten). RAPID DEVELOPMENT. Just open the IDE, write your code, hit F5 and see immediately the results!
Cyberix3D - Free online 3D Game Maker. Make your own 3D games online!
BlitzPlus - Create 2D Games for Windows.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Monkey 2 - An easy to use, cross platform, games oriented programming language
Open 3D Engine - Open 3D Engine is an open-source 3D game development engine in real-time.