Best-selling games for Nintendo Switch game system : Nintendo brings Mario back in pole position and becomes the Best-selling game for the new Switch game system. The new Mario game has almost reached half a million sales in the United States on launch day alone. Nintendo also entered the mobile market with popular Mario games on both iPhone and Android phones. Mario Kart 8 Deluxe for the Nintendo Switch game system is the fastest-selling game in the long-running Mario Kart series. The solid sales numbers for Mario Kart Deluxe equate to an attach rate of 45 percent - meaning nearly one in two Nintendo Switch owners in the Unites States purchased a copy of the game on the first day it was available. Till now, Nintendo sold globally more than 2.7 million Switch game system worldwide.