The document discusses three existing video game franchises - Resident Evil, Assassin's Creed, and Uncharted. It summarizes that Resident Evil was the first mainstream survival horror game released in 1996 involving exploring a zombie-infested mansion. Assassin's Creed uses the concept of re-living memories of ancestors through a device to find an alien artifact. Uncharted features treasure hunting adventures similar to Indiana Jones across lost cities. Common features noted are that all three are successful franchises, and aspects like storylines, environments, and gameplay ideas could potentially be included in the author's own work.