The only reason I decided I should purchase this game was because it was made by rockstar, and in my experience rockstar games fail to disappoint, and once again, they released a game, I thoroughly enjoyed. The missions were top notch onece again, the story was top notch, everything was really good in the game, maybamee except for the excessive amounts of horse riding, but once you get over that hurdle, you have a huge gaming world to experience, stumbling on people needing your help, finding gangs to kill, or just exploring. It was all there for you to do. This game still keeps me pre occupied everytime I play it and makes me want to get the Undead Nightmare Add on, especially the way they have tried to link that with this game.
Overall I think this game is definately worth a purchase, as long as you don't get fed up of riding horses. A good game.