What is mario party jamboree?

As of my last update, there isn't a specific game titled "Mario Party Jamboree" within the official Mario Party series developed by Nintendo. It's possible that it could be a fan-made concept or a title that has been speculated or rumored but not officially released.

The Mario Party series is a popular franchise from Nintendo featuring various minigames and board game-style mechanics, with numerous installments released over the years for different Nintendo consoles. If "Mario Party Jamboree" is an unofficial or fan-created project, you might find information about it in community forums or fan sites dedicated to the Mario Party series.

Remember to always verify the legitimacy of such information, especially if it involves unofficial fan content or rumors.