Players can create sub-levels with entirely different themes, add NPCs to tell stories, and utilize power-ups across any game style.

As a fan project using Nintendo’s copyrighted assets, the game is strictly free-to-play and cannot be monetized.

A public version called Mario Singleverse was released on April 10, 2025 . It includes a "Demo Stage World" where you can play community-created levels and experiment with the theme maker.

Accessing the game can be complex due to its development status.