For single player game, the replayability is insane. After completing the game you can just keep trading drugs and buy new properties. If I am not wrong this is the only HD era single player game that allows the player to buy multiple apartments.
being a railway nerd, i enjoyed GTA 5 more, mainly because you could wander the railway lines with ease, although GTA Chinatown Wars did have some funny glitches with trains, like the train spawning and just going straight over the curves and flying straight until the end of the map, LOL. i played on the DS, it was probably one of the more interesting games in terms of amusing glitches one could see
A rich spoiled angry kid immigrant in the LC. Whose simple mission was to deliver his dead fathers sword to the successor leader of the LC triads. Unfortunately his plane ride only gotten worse as rival gangs ambush Huang and taken his sword and left him nearly dead.