June 2018 saw an exceptionally strong period of growth in the industry, with spending across hardware, software and accessory sales up 25 percent from 2017.
According to the June 2018 NPD report, Mario Tennis Aces for the Switch was the best-selling game of June, and God of War for the PS4 continues to sell strong in second place, making it the tenth best-selling game of the last twelve months.
The highest-selling console of the month was not the Switch or PS4, however, it was instead the NES Classic Edition.
“The NES Classic was June 2018’s highest unit-selling hardware platform, while the PlayStation 4 led the market in dollar sales. This is the first time a Nintendo Entertainment System console has led in monthly unit sales since NPD tracking began in 1995,” NPD’s report reads.
Source: IGN.com NES Classic Was June's Top-Selling Console