FIFA 14 on Wii is based on the legacy engine (similar to FIFA 12/13 on Wii), not the Ignite engine found on PS4/Xbox One. It lacks Ultimate Team and some modern features.
If you own a Wii U, you can insert the original Wii disc and play FIFA 14 directly. No extra software needed. Fifa 14 Wii Iso Download
If you simply want to play a soccer game on Wii or PC without legal concerns: FIFA 14 on Wii is based on the
If you own the disc and want an ISO for your Steam Deck or PC: No extra software needed
An ISO file is essentially a digital replica of a video game disc. It allows users to play their games on alternative hardware, such as a PC using an emulator or a Wii console with homebrew software installed.
While many players look for ISO files to play on emulators like Dolphin or to keep their Wii libraries alive, there are significant legal and safety considerations: FIFA 14 Legacy Edition - Nintendo Wii
If you own the physical disc and want to create a digital backup for convenience or preservation, you can use the ISO file with various modern tools. How to Play Wii Games off SD Card/USB/HD (working 2025)