Looks like some Wii monsters will soon be safe from the maiming weapons of aspiring monster hunter groups. The online multiplayer servers for Monster Hunter Tri, the Wii version of the popular franchise, are coming down April 30th. While hardcore fans will likely be in the midst of Monster Hunter 3 Ultimate (which drops March 31st on the Wii U and 3DS), fans who don't have those systems or don't want to buy the game right away will have to go about monster slaying without their online buddies from May onward.
Until then, Monster Hunter Tri will support 4-player online co-op. The 2-player local co-op will still apply.
Source: Joystiq.com