I mean this is an argument that never end's with gamers, some say the classic retro games like Mario or Sonic, some others say The Elder Scrolls Franchise. There are some game franchises out there that aren't as recognized as others for example Ace Combat, its had like 10 games altogether but it isn't as popular as other games.
But for me I would have to agree with the people who say the Elder Scrolls Games, the first game was released in 1994. You wouldn't call the game groundbreaking but look at the franchise onwards, its just phenomenal what The Elder Scrolls Game have done for gaming. The Elder Scrolls V: Skyrim was a global success, it sold something around 7 Million copies in just one week, which completely belittles Halo 4's sales.
You could kinda call this a rant (sorry if I annoyed anyone) but I want to know what other peoples opinions are.