A newly released mod for Super Mario Sunshine adds full online multiplayer support to the 2002 GameCube platformer, allowing up to ten players to explore Isle Delfino together over the internet. The mod also expands the roster of playable characters beyond Mario himself, letting participants take control of characters such as Wario, Luigi and even Sega's Sonic the Hedgehog, giving long-time fans a fresh, co-operative way to revisit the classic title.

The project is the latest example of the modding community extending the lifespan of older Nintendo titles by bolting on features never included in the original release, such as networked co-op and guest characters. While full technical details of the mod's installation and requirements were not covered in the available text, the update is being positioned as a significant overhaul that transforms a single-player game into a shared, tag-team experience for up to ten people at once.