Watch Dogs and Mario Kart are numbers one and two in sales this week, and both are doing great things for their companies. Watch Dogs sold 4 million copies in its first week, breaking Ubisoft's record and becoming its best selling game in its first week. Meanwhile, Mario Kart 8 sold 1.2 million copies in its first weekend. 82% of those sold in the UK were bundled with a Wii U. In a statement, Reggie Fils-Aime said, "The early response to Mario Kart 8 demonstrates that the best days for Wii U are still ahead. This year's E3 is just days away, and it will be all about the future games for Nintendo platforms. This milestone is a great place to start!"