This is being called a "Ragnarok Online Emulator," so I'm not too sure what exactly it will be, nor who it's made by. (I'm assuming it's "Borfy," since that is the Youtube profile that uploaded the vid)
Here are some notes from whoever released this vid:It's still in alpha process,it's made with palib and I'll release a beta soonish.
* [done] Get the client connecting
* [done] Get a map showing at the right spot
* [done] Touch screen to walk
* [done] Add a keyboard for chatting
* Add sprites for characters
* Clean up
* Attacking
* Interface
* Skills
* morestuff