UPBGE is an open-source 3D game engine forked from old Blender Game Engine, deployed with Blender itself. This unified workflow is its main strength as you can make your game from start to end without leave UPBGE.
This way you will be able to increase your productivity incredibly. You will be a one man army!!!.
You can export your scenes to desktop (Windows, Linux and Mac) although an experimental Android version is on its way. As it uses Blender data format it will be compatible with Blender always. The files can be encrypted using BPPlayer application to secure the game deployment.