When I was still going to school i have created a few games using RPG maker 2000. It was a nice tool for creating simple RPG games.
Now I think i could write similar tool using libGdx. After first week this is my progress at work:
I decided to make my engine to use voxels for terrain and game objects. It will allow to draw terrain and NPCs in simple editor like you would do it in paint :P. Currently i have working voxel mesh builder, camera controller and voxel culling.