For Version 4 at least for me its absolutely unplayable due to frame rate issues, im hardly getting 10 fps when playing this version, I dont know if its just the map or my pc but it don't work for version 4. For Version 3 there was just to many errors everywhere but it seemed to run fine, i didnt complete the first level of it. For Version 2 I did complete the level but there was purple and black errors where certain cars are supposed to be (am i missing a required mod?) It ran perfectly on the first level but for no reason it hard crashes upon trying to load the 2nd level, have not tried just loading into the 2nd level by itself but it would prob have the same result honestly! In all honesty I enjoyed the first level at least but i hope these issues can be resolved, primarily the frame rate and crashing on loading the 2nd level.