Last April, Final Fantasy Pixel Remaster was available, which are basically upgraded versions of Final Fantasy I, Final Fantasy II, Final Fantasy III, Final Fantasy IV, Final Fantasy V, and Final Fantasy VI, finally on PS4 and Nintendo Switch, after it was available in Previously for PC and mobile devices. It seems that the group was able to perform very well in terms of sales.
Square Enix announced that the total sales of the Final Fantasy Pixel Remaster series have exceeded 2 million copies sold worldwide.
Of course, this is not the total sales of the game across the PS4 and Switch platforms, but it includes copies of mobile phones and PCs.
Source: IGN