In an odd move, the online servers for Monster Hunter 3 Ultimate on Wii-U are region locked, Capcom have revealed.
Monster Hunter series producer, Ryozo Tsujimoto, shared the information with Gamereactor in a recent interview. This means that American players will not be able to play online with European players, and neither one of them will be able to play with Japanese players either. Capcom have since confirmed the news on their forums.
It should be noted that Monster Hunter 3 Ultimate runs on Nintendo servers, but just what the cause of this decision is remains unknown, considering that Nintendo 3DS games allow for cross-region online multi-player.
Monster Hunter 3 Ultimate will be released on March 19th in North America and March 22nd in Europe.
http://www.siliconera.com/2013/02/07/monster-hunter-3-ultimates-online-multiplayer-is-region-locked/