Maker4D is free. It can do 3D RPG-s with pre-rendered background, and real time 3D battle. (Similar to Final Fantasy 7 or 8, or Alone In The Dark). It is also capable to make Visual Novels, and it can dynamically switch bethwen 2D or 3D mode.
Maker4D is a free RPG game maker engine that automatically generates your playable 3D characters from 2D picture of your hero. Maker4D has no editor, it automatically generates the game based on the files you created. To make a game with Maker4D, you have to do a directory for every room (map), then copy the background to the map directory (background.jpg), and put your playable character in as hero.png.
The software is now released for ARM + Linux computers, such as the Raspberry Pi, the Wondermedia netbooks.
Currently ARM v5 and ARM v7 is supported.
Maker4D uses software rendering, it requires a 800 MHz or faster ARM CPU (or, 300 MHz or faster x86 CPU) to run playable.
Download: http://maker4d.uw.hu/index.html