Mario Party 9 has never been released for PC, so it has no PC system requirements. It came out on Wii. Released in 2012.

Running Mario Party 9 on a computer

A console game runs on a computer through an emulator, so the hardware it needs is the emulator's. You still need your own copy of the game.

Dolphin

Dolphin emulates Wii.

Minimum

OS:
Windows 10 (1903 or higher), Linux, or macOS 11 Big Sur or higher
Processor:
A CPU with SSE2 support
Graphics:
A reasonably modern graphics card (Direct3D 11.1 / OpenGL 3.3)

Recommended

Processor:
A modern CPU (3 GHz and dual core, not older than 2008)
Graphics:
Direct3D 11.1 / OpenGL 4.4

Source: https://github.com/dolphin-emu/dolphin, read on 2026-09-08.

Where Mario Party 9 can be played

Platforms: Wii.