Kirby crossover headlines Tetris 99’s 50th MAXIMUS CUP this week

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Nintendo has announced a milestone event for its puzzle battle royale – the 50th MAXIMUS CUP in Tetris 99. The limited-time online competition brings a collaboration with Kirby Air Riders, adding a themed in-game look for participants. Players can unlock the crossover theme by collecting 100 event points in Tetris 99 mode. The event runs from Dec. 4, 11:00 p.m. PT – Dec. 8, 10:59 p.m. PT. Nintendo also notes that Kirby Air Riders is available now exclusively on Nintendo Switch 2.

What’s included in the 50th MAXIMUS CUP

The anniversary Cup features an in-game theme inspired by Kirby Air Riders. Visuals and audio cues are tailored to the crossover, aligning with the series’ pink hero and high-speed riders. The theme is a timed reward – earn it during the event window and keep it once unlocked.

How to unlock the theme

• Play matches in Tetris 99 mode during the event period.
• Accumulate 100 event points across your games.
• Once you reach 100 points, the Kirby Air Riders theme unlocks for your account.

Schedule and platforms

The event starts late on Thursday and ends Monday night, all in Pacific Time. Tetris 99 runs on Nintendo Switch, with online features requiring a network connection.

Table: 50th MAXIMUS CUP schedule and unlock criteria (PT)

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Official trailer

Nintendo published an event video highlighting the collaboration and timing. Watch here: https://www.youtube-nocookie.com/embed/a0fW9zDusfA?autoplay=0&modestbranding=1&loop=0&controls=1&mute=0&cc_load_policy=0&hl=en&cc_lang_pref=en&rel=0

Online requirements

Online play requires a Nintendo Account and a Nintendo Switch Online membership. An internet connection is necessary; availability varies by country and terms apply.

Context: Kirby Air Riders on Nintendo Switch 2

Nintendo notes that Kirby Air Riders is available now, exclusively for the Nintendo Switch 2 system. The Tetris 99 collaboration theme draws directly from that release.

Final takeaway – a milestone Cup with a straightforward unlock

For players who dive into Tetris 99’s anniversary event, the goals are clear: jump into matches, bank 100 event points, and secure a limited Kirby Air Riders theme before Dec. 8, 10:59 p.m. PT. If you enjoy time-limited crossovers, this one is concise, focused, and easy to plan around.