Blitz3D - Create 2D and 3D Games for Windows.
Construct 2 - Scirra Construct is a 2D game development engine with a focus on building games visually.
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
BYOND - BYOND is the premier community for making and playing online multiplayer games.