More info on IGDB

Clu Clu Land D was originally released simply as Clu Clu Land (though the name in the title screen is Clu Clu Land: Welcome to New Clu Clu Land) for the Famicom Disk System, and is a port of VS. Clu Clu Land. The game would later be playable with the localized name as an unlockable in Animal Crossing, alongside the original Clu Clu Land.