GTA 3, because it was darker than the others, and more sort of gangster feel to it. GTA: Vice City was too bright and stuff, and GTA: San Andreas was too black.
So yeah, GTA: 3 would be amazing with the vehicles and some of the levels of Vice City (I've been saying that for years), oh and look what's came out
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GTA: Liberty City Stories. If that was on the PS2 or XBOX I'd buy it.