Unity - The multiplatform game creation tools for everyone.
Friv - A safe place to play the very best free games!
Godot Engine - Feature-packed 2D and 3D open source game engine.
Armor Games - Play free online games at Armor Games! We're the best online games website, featuring shooting games, puzzle games, strategy games, war games, and much more...
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Kongregate - Kongregate has free games that you can play online. Choose from thousands of free flash games.