Originally Posted by
Metal Gear Rex
As far as how it's been changed from vanilla, there are a number of things. Last I checked, FX still used an early version of DragonsLover's patch, but it should be moving away from that. I haven't been keeping up with FX news lately so I'm not too sure about that part. There are also things like bug fixes that effect gameplay. For example, Strength is capped at 255 in vanilla and there's a Dexterity bug where the value overflows past 255 and returns to 0. Bug fixes though they might be, they can still have a potentially negative impact on an older map that was designed with these things in mind. Still, I do know that there should be options to disable FX's bug fixes to help simulate the vanilla game better.