The elevated and subway rail systems of Liberty City as depicted in Grand Theft Auto III encompasses two ring lines, one elevated and one underground, which serves various portions of the city. Because the GTA III rendition of the city is reused in Grand Theft Auto: Liberty City Stories, the railway systems remain virtually unchanged in the game, it saved a few minor tweaks. Due to hardware constraints, the rail networks are absent in the Grand Theft Auto Advance rendition of the city.