Square Enix didn't have a banner year in 2019, with overall sales and HD game sales declining year on year. But mobile games held strong for the company, accounting for over half of Square's total revenue.
The financials come from a Square Enix presentation (thanks, ResetEra). As you can see in the graphic below that was made up by ResetEra, mobile and browser games make up over half of Square Enix's gaming revenue for the fiscal year of 2019, which ends at April 2020.
These mobile games for Square Enix include Final Fantasy Brave Exvius, Dragon Quest Walk, Romancing Saga, and a number of other games. In total, the $978 million that Square Enix accrued from phone and browser games in the fiscal 2019 year is up 27% year on year.
Perhaps this shouldn't come as a massive surprise given that Square Enix had relatively few HD game releases in the fiscal 2019 year: Kingdom Hearts 3's ReMind DLC and Dragon Quest 11: Definitive Edition for the Nintendo Switch are the only two banner releases.
Final Fantasy 14 continues strong however. The MMO alone accounted for 21% of Square Enix's revenue last year with the impressive Shadowbringers expansion in June 2019, and its $368 million in revenue is up a massive 48% year on year.
As Square Enix's main financial briefing notes, these figures for the 2019 fiscal year actually do include the "posting of sales from the early shipments" of Final Fantasy 7 Remake. Just a few days after its official launch in early April, Final Fantasy 7 Remake had sailed past 3.5 million copies sold worldwide.