DK Challenge: How Nintendo's Free Limited-Time Event Brings Achievements and Collectible Cards to Switch 2

Difficulty scales across the event. Some tasks are designed as straightforward introductions, while others are labeled "Developer Challenges" and target experienced players looking for a tougher test . All challenges are accessed and managed through the Nintendo Switch Online app, located directly on the Switch 2 HOME Menu .

Availability and requirements

The DK Challenge is live from June 9 through September 1, 2026 . Participation requires two things: a Nintendo Switch 2 console and an active Nintendo Switch Online membership. The event itself is entirely free for subscribers—no additional purchase or expansion pack tier is necessary .

Super Mario crossover in the Emerald Rush DLC

Alongside the DK Challenge, Nintendo announced a separate but concurrent Super Mario crossover event inside Donkey Kong Bananza's Emerald Rush DLC. This limited-time content introduces Mario-themed items to DK Island, including exclusive outfits for Donkey Kong and Pauline, Power-Up Blocks, and Super Mushrooms .

The crossover is structured across four distinct waves:

• Wave 1: June 9–30
• Wave 2: July 14–21
• Wave 3: August 4–11
• Wave 4: August 25 – September 1

A key distinction: while the DK Challenge is free for NSO members, accessing this Mario crossover content requires ownership of the Emerald Rush DLC, which is a paid add-on for Donkey Kong Bananza .

A new engagement model for Nintendo

The DK Challenge signals a notable shift in how Nintendo approaches player retention and cross-game integration. By combining achievement-style tasks—a staple of competing platforms for nearly two decades—with a digital collectible card reward system, Nintendo is creating recurring motivation for NSO subscribers without building a full platform-wide achievement infrastructure .

The event also serves as a bridge between Nintendo's past and present. By tying challenges to both classic NSO titles and the latest flagship release, Nintendo encourages players to move fluidly between its retro library and modern games, potentially driving engagement and subscription value in ways that standalone title releases do not .

As the first structured, time-limited event of its kind for Nintendo Switch Online, the DK Challenge may offer a preview of how Nintendo intends to keep its subscription service feeling fresh between major Direct announcements and game launches.