Grand Theft Auto: San Andreas - PS2

Gang wars. That's all i gotta say

This game is amazing. There are so many new features it blows my mind. i'm 15 hours in and i'm still only in the first city. But the best part are the gang wars you can start. The city is divided into sections and at any point you can enter a section and kill all the rival gang members, starting a gang war. 3 waves of rival gang members will try to kill u. Kill all of them before they kill u and u win the territory for you gang, and u recieve constant cash from the territories u own. So damn cool.