When searching for Wii U games, you will often find various file extensions. Choosing the right one depends on whether you are playing on original hardware or an emulator.
Unlike a single file (like a .zip or .iso), a WUP "ROM" is actually a containing several specific files: .app files : These contain the actual game data. .h3 files : Hash files used for integrity checks. wii u wup roms
The Ultimate Guide to Wii U WUP ROMs: Everything You Need to Know When searching for Wii U games, you will
: Critical metadata and "ticket" files that tell the console the game is "authorized" to run. When searching for Wii U games