The fact that it's directed by Ridley Scott and the original design elements are credited to H.R. Giger may have a large part to play in the similarities.
The film however does not hold a candle to the plot or story of Alien. So with that said, I'll now focus on the film as it is.
This film looks excellent. The special effects / modeling and cinematography (for the most part) is excellent. The story and plot are very thin and bordering on the ridiculous once you start to analyze its progression through the movie.
The aerial tracking shots of landscape and the ship in flight look excellent.
I do not know why they spoil films by being so dark. It's as if they want the dark to increase the intrigue or to help advance the thriller concept, yet all it does is detract from the visual pleasure in my opinion.
The plot is bordering on ridiculous and the story is not much better. For example IMDB description of this movie is listed as this.
When you put that into perspective of what happens at the start of the movie (before the title is even introduced) it just does not make sense.
One of the most ridiculous aspects are the two geologists get lost? HUH How is that possible. Firstly one of them is the person which owns/manages the PUPS (which map all the terrain). He has access to their data. How the heck could he of all people get lost in the caverns? Especially later on when they get a radio transmission of what their current location is, he provides an exact location. So it's just not possible for him to be lost. Also the strange part about that request is in the ship they have a holographic display which shows the exact location of every member in the survey team within the mapping that has been generated by the PUPS. Just ridiculous.
As I mentioned in Cinematography, most of this movie is shot underground, so in the dark. This movie starts out set in the year 2089, where they have developed all this new technology but the humble torch has not seen any progress with its development, yet it is the foundation on which every team member relies on? That's stupid. I would have expected everyone to have IR torches that provide full illumination of the surroundings, like their flying pups can do (definitely an idea they have adapted from Stargate Atlantis). Once again just a contradiction.
Charlize Theron has her own lifeboat on the ship so she can be completely self sufficient from the ship. Quote "Anything Miss Vickers would need to survive a hostile environment". We are introduced to this early in the movie. One crew member points out she has a Pauling Med-Pod which can do bypass surgery. However later in the movie when someone goes to use it, the Med-Pod reports "Error. This Med-Pod is calibrated for male patients only.." HUH? this is a piece of equipment privately owned by the highest ranking female on the ship and is in her room yet it is not calibrated for females? OMG!
So moving along in the story. They arrive at the planet in question, after spending 2 years in transit and a trillion dollars, yet they land at the first structure they find? Why not fly around the planet and survey it further. Where they landed didn't even look developed. Why not look over the whole planet for cities or signs of a developed race? That just seems absurd.
Once inside an underground structure their robot knows how to open doors and knows exactly what he is looking for when he finds it?
What is the motive of the robot. In Alien it was clear what the Robots task was, but in this it's not evident at all because everything it does seems counter productive.
When they do discover a threat they do not defeat it, nor do they attempt to understand it, nor does that threat correlate to what we saw at the start of the movie. The ending of the movie is even more strange because it has clearly been designed to provide a sequel than it did actually resolve any of the issues. That is fair enough, but you can't say they fought a battle to save the human race, because the threat was no where near neutralized.
I won't say much more as I'm not interested in spoiling the story (what little there is), but there's just so many issues, that it does border on ridiculous.