Grand theft auto 3 or grand theft auto Chinatown wars?
Either way both of them are great they have many missions in it,not a ton of weapons but a good amount of them,grand theft auto 3 also has nice graphics and both of the games also have a big area to explore..I would recommend both of them
And it's also fun to walk or ride around freely doing different things in the game lol so you don't have to do just mission all the time