RPM is described as:
RPG Paper Maker is a game making engine, free for non commercial use, allowing you to create a 3D universe with many 2D sprites and even 3D objects using a simple interface for all available platforms: Windows, Linux, and MacOS.
RPG Paper Maker gives you a way to create RPGs in a full 3D world as simply as it is in 2D! RPG Paper Maker also comes packed with cool retro inspired graphic assets for you to use in your own projects.
As mentioned earlier, this engine is source available with the source code hosted on GitHub under a proprietary license. You can create games for non-commercial use, but if you want to sell your title you need to purchase a commercial license, which is available on Steam as DLC.
You can learn more about RPM and see it in action in our review video below.