Nintendo has already sold over two million copies of Super Mario Odyssey within the first three days of its release. That can be deduced from Nintendo's Six Months Financial Results Briefing.
One of the slides included in the briefing PDF shows that the company has already sold over two million copies of the game. The game was released last Friday.
The game features typical movement mechanics, such as wall jumping, diving and long jumping, as well a new mechanic related to Mario's cap. The cap comes alive, can be used as a frisbee to grab items, but also to get hard-to-reach areas.
Mario's cap can be controlled by a second player by using one of the Joy-Con controllers. The second player can also use the cap to collect coins and to take out enemies.