Without mincing words "Aliens: Colonial Marines was not a good game. Our review, along with countless others, can attest to that. Looking bad, playing bad and riddled with bugs the game was not a joy to play.
After passing the WiiU release date March 31st, Sega had no comment on why. Today however, Sega has stated that the WiiU port of the game is cancelled. This makes sense as who is going to buy a game which everyone knows by now is not a worthy buy. Sega stresses though that they have many interesting WiiU games "In the pipeline".
There is no word on whether the jobs of the men and women who handled the port at Demiurge Studios are affected by this.
[Source] - Kotaku