The Mass Effect Series is a popular science fiction video game franchise developed by BioWare. It combines role-playing elements with third-person shooting mechanics, allowing players to explore a rich universe filled with diverse alien species and complex narratives. The series follows Commander Shepard, who must unite various factions to combat a looming threat known as the Reapers. Players make choices that affect the story and character relationships, leading to multiple endings. The first game was released in 2007, followed by sequels that expanded the lore and gameplay. The series is praised for its storytelling, character development, and immersive world-building.