Hi, I have been working on this application for years, it's a quick low poly modeling tool, with UV automatically unwrapped, rig semi-auto generated. You can add pose and motion, export as .OBJ/.GLB/.FBX and import into game engine. 

The modeling process is different than the traditional vertex editing way, you need make a reference sheet with front and side view, then according to the background, you put nodes on the canvas. It's quick to make a game ready low poly asset. please check it out here