Tetris 99 adds Super Mario Galaxy theme—what's included?

Tetris 99’s new Mario Galaxy crossover went live

Tetris 99 is running a fresh crossover event celebrating Super Mario Galaxy as part of Mario’s 40th anniversary celebrations and MAR10 Day activity. The centerpiece of the event is a special theme players can unlock while participating in event play, along with a new cup structure that ties into the promotion.

In addition to the theme, Nintendo also announced a new Maximus Cup tied to the event window. These cup events matter in Tetris 99 because they typically determine who earns progression and rewards based on performance during the limited-time matchmaking period.

Why this matters for players

Crossovers are one of the main ways Tetris 99 keeps its longtime audience returning between major releases. A Mario Galaxy-themed visual set is also a strong fit: Galaxy is a recognizable Nintendo property with distinctive space-and-planet aesthetics, which translate well to Tetris 99’s battlefield presentation.

For collectors, themes and cup rewards are the main reason to jump in early—especially because they’re time-limited and designed to be competed for during the live event period.

No additional gameplay changes beyond the event structure and cosmetics were specified in the provided material. The update being live is the key point for players who want to earn the theme and participate in the Maximus Cup while the crossover is available.