If you are not familiar with the project, you should read previous coverage first.
[Aug.14] Earth Online Sounds Like the Largest and Most Unlikely MMO You Could Have
[Sept.11] Earth Online Producer Says the Game Is Bigger Than GTA and It's Not a Fraud
Finally the ambitious project Earth Online has in-game footage. Although it doesn't show any gameplay content except a glance at the world environment, character animations and UI. The game is built with Unreal Engine 4. The game world is a globe like planet earth, the developer Kupai says, and that means there's no edge in the map. If you keep walking straightly you will eventually go back to where you start.
Some screenshots taken from the video.