Red Dead Redemption is the best game of his developer and im my opinion, one of the most advanced games of his generation, back in his launch this game is very impressive even more than a decade later the game still's very good, he have some parts that can be annoying but the game at all is very good.
(I play the game again recently)
The variety of the world is impressive, we have live towns and some randoom encounters, some of then is just you helping people or is some kinda of assault in some places in the middle of the desert, also have some fellas that gonna challenge you to a duel.
The secondary missions is one of the high points of the game, look you have some deep and dark missions and others that is just simple, the fellas who give this missions is strangers that you dont know, each mission can be done each time you want during the main campaing.
The main game is about a man who have to hunt his old gang friends just to have his family back, cause the governament take they away, so you have to find and confront three of then, the game ambient is the west of America in the the 11th year of the 20th century, so this is the end of the old west, the end of the outlaws, and you are one of the last outlaws, the protagonist just want to live his life with his family in his ranch...but the past stills following him.
This is a great game about a outlaw and his journey to Redemption.