Every year on March 10, Nintendo fans celebrate MAR10 Day, a playful nod to the company’s most iconic character. Over the past decade, the day has become an annual celebration filled with announcements, game deals, and nostalgic surprises for players who grew up with Mario. This year continues that tradition, as Nintendo has confirmed that three classic Mario titles will be joining the Nintendo Switch Online library.

The announcement brings exciting news for retro gaming enthusiasts. On March 10, players subscribed to the Nintendo Switch Online + Expansion Pack tier will gain access to Mario’s Tennis, Mario Clash, and Mario vs. Donkey Kong. These titles represent different eras of Nintendo history, giving fans a chance to revisit some lesser-known but important chapters in the Mario franchise.

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Two of the incoming games come from one of Nintendo’s most unusual consoles: the Virtual Boy. Released in 1995, the Virtual Boy was an experimental system that attempted to deliver immersive 3D gameplay long before modern VR technology became popular. Although the console itself had a short lifespan, it still produced a few memorable games.

One of those titles is Mario’s Tennis, which actually holds an interesting place in Nintendo history. It was the first entry in the long-running Mario Tennis series. While the franchise would later evolve into a popular sports spin-off across multiple platforms, the original Virtual Boy version laid the groundwork for what would become a staple of Nintendo’s multiplayer lineup.

The second Virtual Boy addition is Mario Clash, a unique action game that reimagines the arcade classic Mario Bros. with a pseudo-3D perspective. Players throw shells at enemies across multiple layers of platforms, using the depth mechanic that made the Virtual Boy stand out at the time. While it’s a relatively obscure title today, its creative gameplay makes it a fascinating piece of Mario history.

Both games will be playable through the recently introduced Virtual Boy emulator available on Nintendo Switch Online. However, Nintendo notes that players will need compatible accessories to fully experience the intended visual effect, including either the $100 Virtual Boy replica viewer or a $25 cardboard headset.

The third addition is Mario vs. Donkey Kong for the Game Boy Advance. This puzzle-platformer originally launched in 2004 and blends classic platforming with clever environmental puzzles. Interestingly, Nintendo already released a modern remake of the game on Switch not long ago, making the arrival of the original version on Switch Online an unexpected but welcome bonus.

Some fans have noted that other Game Boy Advance classics are still missing from the service, including popular titles like Mario Tennis: Power Tour. Even so, the addition of Mario vs. Donkey Kong gives players a chance to experience the game exactly as it first appeared on handheld systems.

For Nintendo fans, MAR10 Day has become a yearly opportunity to rediscover Mario’s long legacy. With decades of games spanning countless genres—from sports to puzzle adventures—there’s always something new or nostalgic to explore.

Players planning to expand their digital game libraries during the celebration may also consider preparing their accounts ahead of time. Adding funds with a Nintendo eShop Gift Card is a convenient way to grab Mario-themed deals or other titles that might appear during the festivities.

Ultimately, the arrival of these three retro games highlights Nintendo’s ongoing effort to preserve its history while giving modern players easy access to classic experiences. When March 10 arrives, fans around the world will once again celebrate the plumber who started it all—this time with a fresh batch of retro adventures waiting on Nintendo Switch Online.