The recent Nintendo Treehouse stream has unveiled exciting new gameplay details for two of the Switch 2 most anticipated exclusive titles: Mario Kart World and Donkey Kong Bananza. Both games appear to push the boundaries of their respective franchises with expanded freedom and innovative mechanics.
Mario Kart World Reimagines Racing Freedom
The Treehouse stream showcased Mario Kart World’s revolutionary rail and wall riding system, prominently featured in courses like Whistlestop Summit. Players can chain together jumps between up to three different rails before touching the ground, adding a new vertical dimension to the classic racing formula.

Perhaps most significant is the game’s free-roam approach to racing. Rather than simply selecting courses from a menu, players physically drive between different tracks within a Prix. This interconnected world features a day-night cycle and populated with Mario Kart characters going about their own activities. Nintendo appears to be implementing a smaller-scale version of what Forza has accomplished with its open-world racing.
The stream also revealed that players can collect food items between courses, allowing them to swap their racer’s costume to match the thematic elements of different world areas. Additionally, quality-of-life improvements include the ability to hold items behind your kart without continuously pressing a button. Water sections were confirmed as well, with karts transforming into watercraft when venturing off-road into aquatic areas.

The Treehouse presentation introduced the Knockout Tour, a massive transcontinental race supporting up to 24 players simultaneously. This mode connects six separate Mario Kart World courses seamlessly, with the four lowest-ranking players eliminated after each course until only one racer remains victorious. The mode will be playable at various speeds: 50cc, 100cc, and 150cc.
Donkey Kong Bananza: Destruction as Gameplay
Donkey Kong Bananza appears to be one of the Switch 2’s most experimental launch titles, emphasizing environmental destruction as a core mechanic. Players are encouraged to punch, slam, and blow up their surroundings to create their own pathways through the game’s levels, which are structured as different layers of a hollow Earth.

The game rewards exploration through destruction, with hidden alcoves containing collectible “Bananium gems” for players who venture off established paths. Ground-slamming serves as a sonar-like mechanic to help discover secrets. A dynamic map system will reflect players’ destructive alterations to the environment, showing the different routes they’ve carved through mountain walls and cave floors. As the Treehouse presentation stated, Donkey Kong Bananza “literally lets you leave your mark on the world.”

Both titles appear to showcase the enhanced capabilities of the upcoming Nintendo Switch 2 hardware, with particular emphasis on environmental interaction and player freedom.