Gaming Nexus writes: "Mass Effect 2 is like the second child of the BioWare family. Two years ago they released the first Mass Effect and everyone was fairly impressed by it. Bioware's experiment with a shooter-RPG hybrid which incorporated a sci-fi and the deep story that Bioware is known for. Given that it was their first iteration of the Mass Effect franchise, there were bound to be a few missing points on behalf of the inexperienced parents. That's where a sequel comes into play as Bioware had time to analyze the missteps with the first game and improve upon them for the sequel.
In Mass Effect 2, BioWare has given birth to a game with the core concepts of the first Mass Effect and refined them into pure gaming bliss."