Lectora - Lectora Inspire is a robust tools and built-in eLearning and the responsive course designing feature.
Unity - The multiplatform game creation tools for everyone.
ProProfs eLearning Authoring tool - ProProfs eLearning Authoring Tool helps businesses and educational institutions to create online training and educational programs.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Jackdaw - Jackdaw Cloud is an online e-learning authoring tool. This authoring of e-learning needs no downloads, it is cloud based and no programming skills are needed.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.