i have play gta 4 but i don't like very much...i play Mafia 2 very fun game...mafia 2 is great game but story too short and small map...i think mafia 2 feel better than Gta 4 because fighting mechanics a, car physics(gta 4 feel like driving boat), cover system etc..gta 4 have big city but feel small...Mafia 2 i'm little disappointment because not open world/sandbox game...what do you think...forgive my english 
... just my opinion
... just my opinion
