The client and server is under GPL3 (except the images). And part of the project:
http://pokecraft.first-world.info/

The license of the datapack is GPL3. And actually have possible legal issue. But will be totally remaked in same style as the original style to be freely used.

=================== Todo =====================
Define the datapack format, create the story, ...
Define the protocol and apply it with a client/server.