A play on Steam + CD + DLC offered, what more?

This is perfect: the game can be installed directly from both DVD but also from Steam for those who prefer the paperless: an activation code is provided in the box. It is also possible to install the game via Steam but by loading the content from the DVD rather than from the internet is faster (see procedure below).
The game also comes with a DLC - it will necessarily download via Steam this time - which allows players to play as the first Alien aboard the Nostromo. It is always nice, especially for the price!

I did play a few hours and I do not regret the purchase: the game transcribes perfectly the atmosphere of the first film, with a retro look science fiction and film grain effect on the image. The music is excellent, and the first encounter with the alien is memorable. I do not think that the game can be classified as "horor", but the tension is everywhere and this game will give you great sensations for sure!

To install the game on Steam but via DVD (no download so):
1) Exit Steam or ensure that it is not running;
2) Navigate to the directory of the Steam application (example: C: \ Program Files (x86) \ Steam);
3) Click on "File" then "Open the command prompt," the window of the command prompt appears;
4) Type "Steam.exe -install X:" without quotes, where X is the letter of the DVD player;
5) Steam launches, follow the instructions and play!