What's the main difference between this game and the other two, also what's the difference between this series and other racing games which are just like it?
forza probably does it the best
youd get this sequel if you liked the other two presumably, same reason anyone would get a call of duty sequel, more of the same but prettier
other than that it's also the first forza horizon game on pc and i dont have an xbox so thats a pretty good case for anyone wanting to play the series on PC
probably also larger map than the previous two
and by this series and other racing games like it, id assume you mean open world racing game, not sure how far you'd like to stretch that definition if you want to compare the need for speed series, but I'd say the likes of test drive unlimited and the crew are closer in terms of it being a car RPG than an open world arcade racer
TDU and the crew are made by the same people, the gameplay on those aren't great but arguably I'd say the maps are much larger and better, namely the crew's map which I think is amazing, but for the most part, forza is better in every other way, gameplay, racing physics, etc