Create YOUR Shepard (male or female, customizable appearance, 6 classes with all useful abilities ...), explore this universe by delivering fierce fighting, change your equipment and your commando (2 allies to choose among 6 you can recruit), choose the orientation skills of Shepard and your allies, and make your choices during your missions by keeping in mind that every choice has consequences that you will have to face sooner or later.
In the end, Mass Effect is a game taking, featuring a substantial period of life (easily count a 50aine hours to finish the first part), excellent replayability (6 all different classes, as well as many modes changeable difficulty at any time during the game, and dozens of choices to make throughout your adventure, some critical, some less crucial but not unimportant), and a rich and searched, which places up the start of an epic story.
In addition, the classic version has an additional mission and includes a second disc containing many bonuses.
In short, a quality game for fans of the genre, to buy without hesitation.