Other versions of the game didn't fare too well with reviewers so it's likely SEGA didn't see much value in spending any more money on it.
However, the company appears to be committed to Wii U projects despite the cancellation and has since released the following statement to Game Informer:
We are constantly looking at all areas of our business and in this case have made the decision to not continue development of the Wii U version [of Aliens: Colonial Marines].
Rest assured that we have some fantastic developments for Wii U in the pipeline which we will announce at a later date.
The promise of more projects is always welcome and we're looking forward to seeing what SEGA has in store for Wii U in the future.
What would you like to see SEGA bring to Wii U? Let us know in the comments below.