Grand Theft Auto IV is an open-world adventure action game released by Rockstar. This game is a reboot, introducing a whole new universe far different from the rest “GTA” games, but it still gives some hint which related to other games, and it is up to the player to recognize it. The game uses improved 3D graphics, combined with realistic ambient effects, to bring a new experience to the player. Moreover, this game uses a new graphics engine, so it is a complete breakthrough compared to previous versions. And it doesn’t change the nature of roleplay, players participating in this world can freely do everything they want to entertain. Players can travel everywhere, use a variety of weapons, do missions, take on mini-games, etc., there are countless things for players to do and enjoy in this game.