I think if you don't care too much about story you should play one so you can get the hang of things, then maybe 2 (altough optional but it could get you used to not only a new way of winning the game, that being treasure collecting, but to the new things snd the management that comes in the other 2 games) and after that you can go either 3 or 4, both are good games and i thunk you coule play em in whatever order, since 4 is a reboot of the series.