GameStop reported its sales results for the 2018 holiday season, which showed the company suffering decreases to many of its top revenue generators. Hardware, software, and pre-owned sales all decreased in the 2018 season, whereas accessories and digital currency grew.The total global sales for holiday 2018 were $2.63 billion, which was a 5% decrease compared to the 2017 holiday period. But that compares the nine weeks ending January 5, 2019 to the nine weeks ending December 30, 2017, which the store notes isn’t a comparable sales period. By shifting the sales periods to end on January 5 and January 6, respectively, total store sales increased 1.5%. That includes a 3.6% increase in the US that helped offset a 3.1% decrease internationally.The company also broke down several types of revenue for comparison. New hardware sales were down 6.1%, due to the Xbox…