My guess is all of the parties that have story modes do not have individual board runs, but I am not sure. I checked 4,5, and 7's pages, and they don't have individual board runs either.
You can still run the game however you'd like! Even if there isn't representation of a certain category, you can put your own personal work in. If you're able to inspire others to run the game in the same fashion and there is an increase in runs of this type, it's not as unlikely for a leaderboard to be created for it anymore. Run the game, have fun, be passionate, and share your experiences with everybody!
i know for a fact 7 has single board record on the site.
source: https://www.speedrun.com/marioparty7/individual_levels
Any chance we can get individual boards added? I started the timer on pressing a to confirm the game settings with Tumble, and ended the timer on the final Results page where detailed results and continue appear at the bottom. Runs can be split up by CPU Difficulty and whether or not Bonus Stars are turned on. I've completed a run for each Battle Royale Map with the following settings.
Player Settings:
CPU Difficulty: Easy
No Handicap
Party Settings:
Number of Turns: 20
Hide Game Explanation
Message Settings: Fast
Movement Speed: Fast
Hide CPU games
All Minigames On
Bonus Stars On
No RNG Manip
I got zero Wacky Watches so far -_- --> links to runs