Videvo - Free HD stock footage & motion graphics for any project!
microStudio - microStudio is an all-in-one online game engine that enables you to create games, develop programming skills, have fun playing what you have created, share with others, and prototype.
Coverr - Beautiful free stock videos for any use
Godot Engine - Feature-packed 2D and 3D open source game engine.
Mixkit - High-quality stock videos that are completely free.
ENIGMA – LateralGM - LateralGM is a powerful IDE for ENIGMA, and both of these combine to offer you a cross-platform game environment.