You're looking for information on WiiWare ROMs!
WiiWare was a digital distribution service for the Nintendo Wii console, offering a wide range of downloadable games, often at a lower price point than retail titles. While it's no longer available, some users might be interested in exploring WiiWare ROMs for nostalgic or archival purposes. wiiware roms
WiiWare ROMs are digital copies of WiiWare games, ripped from the original servers or extracted from Wii console game discs. These ROMs are essentially backups of the games, which can be played on a computer or other device using emulation software. You're looking for information on WiiWare ROMs