Producer Liu Jun has confirmed that the Nintendo Wii U will not feature the offline co-op mode for Splinter Cell: Blacklist. He stated that the pressure to ship the Wii U version alongside other platforms was the reason behind the missing feature.
“In order to ship at the same time as the other consoles, we unfortunately weren’t able to delve into this feature. But we think Nintendo gamers will be really excited to get the game at the same time as other consoles.”
Other than the local co-op play feature, the Wii U version of the game is virtually identical to that of the PC, Xbox 360 and PS3.
Source: Joystiq