The Wii U port was handled by Treyarch rather than Infinity Ward.

If you want to run the ROM on a modded Wii U:

The Wii U edition of Ghosts wasn't just a simple port; it offered features not found on other consoles:

Intel i5-8400 / Ryzen 5 3600, 16 GB RAM, Vulkan-capable GPU (GTX 1060 or better).

: Unlike other platforms, the Wii U version did not receive major DLC expansions, though the "Free Fall" multiplayer map was made available. Legal Ways to Play