I noticed on the map that there is a same place that is on the map that are on San Andreas and Liberty City *of GTA 3 but for some reason not GTA 4 or Liberty City Stories*
It is East Beach and in this one area there is a broken car and a little tunnel there. Go into the tunnel and than in the back around there you will see a circle in the sand and you stand on it and fall and than you turn into the guy from GTA 3 and you are in Liberty City. WARNING: Don't buy a house in Liberty City of San Andreas or else it will screw up the game and be GTA 3 and you can't go back to san andreas, plus the map, galleries, and the save things, and everything else change as the things that are in GTA 3. So basically you are playing GTA 3.
It is East Beach and in this one area there is a broken car and a little tunnel there. Go into the tunnel and than in the back around there you will see a circle in the sand and you stand on it and fall and than you turn into the guy from GTA 3 and you are in Liberty City. WARNING: Don't buy a house in Liberty City of San Andreas or else it will screw up the game and be GTA 3 and you can't go back to san andreas, plus the map, galleries, and the save things, and everything else change as the things that are in GTA 3. So basically you are playing GTA 3.