Roblox - Reimagining the way people come together.
Construct Classic - Construct Classic is a free, DirectX 9 game creator for Windows, designed for 2D games.
Unity - The multiplatform game creation tools for everyone.
GDevelop - GDevelop is an open-source game making software designed to be used by everyone.
Project Anarchy - Project Anarchy is a complete end to end game engine and state-of-the-art toolset for mobile.
RPGBoss - Cross-platform 2D role playing game maker.