What console was the original Paper Mario first released for?

The original Paper Mario was first released for the Nintendo 64.

Developed by Intelligent Systems and published by Nintendo, the game began life under the working title Super Mario RPG 2. It was initially planned for the Nintendo 64’s 64DD add-on, but development shifted to a standard cartridge, making the Nintendo 64 its original platform.

Paper Mario launched in Japan in 2000 and reached international markets in 2001. Its turn-based battles use timed button presses called action commands, a feature that lets players improve attacks, defenses, and special moves through well-timed inputs.

The game is sometimes confused with later entries because the series eventually appeared on GameCube, Wii, Nintendo 3DS, Wii U, and Nintendo Switch. Its direct successor, Paper Mario: The Thousand-Year Door, was released for the GameCube in 2004, while the original later returned through virtual-console and Nintendo Classics services.