RPG Maker - Make your own PC game with RPG Maker. Our easy to use tools are simple enough for a child, and powerful enough for a developer. Try it free today!
Construct Classic - Construct Classic is a free, DirectX 9 game creator for Windows, designed for 2D games.
Godot Engine - Feature-packed 2D and 3D open source game engine.
GDevelop - GDevelop is an open-source game making software designed to be used by everyone.
RPG Paper Maker - Website
RPGBoss - Cross-platform 2D role playing game maker.