It's more like Red Dead than Juarez. It boasts a good story and voice acting. MUST be played on hardest difficulty or its waaayy too easy.
You mine little gold deposits hidden around the world for cash. Ride horses across Montana I think. Pick up missions sort of like GTA. Upgrade weapons and skills in an RPG manner.
Not nearly as big as Red Dead Redemption, or as pretty, but a really good game for what it is. Once u get over the 1st few missions it opens up alot. But remember, HARD MODE!