It's been reported on Twitter by Nintendo themselves that two older Mario Party games are making a comeback on Virtual Console for WiiU. These games are "Mario Party 2" for the N64 and...
"Mario Party DS" (the console it's on is in the title of the game). Mario Party 2 was the only time Mario ever wore a cowboy hat.
Mario Party 2 has not been confirmed for North America, so far all I've seen are from foreign Nintendo branches. Keep an eye out, it may be on it's way shortly.