Board Thread:General Discussion/@comment-95.23.111.72-20140618101650/@comment-4270236-20140618153804

The closest thing is probably the upcoming game, Destiny. If you don't know what it is, it is a roleplaying first person shooter game set in a futuristic world.

At the moment, the alpha release has shown that you can do cooperative online missions, socializing and shopping, and PvP, however, they are all different gamemodes. It is not openworld, however.

Another MMO that you can also play is Planetside 2, where it is an FPS game with openworld aspects. Pretty much, it's a nonstop game of trying to control the entire map. Fights get intense and can last a rather long time, like a real battlefield(weapons and vehicles and bases). You can also start platoons. Unfortunately, you would need a better than average computer to run this.

Anyways, I hope this helps you out!