GDevelop - GDevelop is an open-source game making software designed to be used by everyone.
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!
Game Editor - Game Editor is the open source game design software that gives you the power to create the games of...
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