Urho3D
Open Source
Urho3D is a free lightweight, cross-platform 2D and 3D game engine implemented in C++ and released under the MIT license.
Cocos2d-x
Open Source
Cocos2d-x is an open-source and cross platform open source free 2D game engine for mobile game development known for its speed, stability, and easy of use.
Playir
Freemium
Playir is a mobile app and game creation platform, that allows you to create your own games and apps from pre-made templates.
