(I got this game not to long ago and I've allready got 100%, Still fun to play though... if anyone else has this game then Feal free to put up high scores/best times...)
Note: The Great Cave Offencive and Milky Way Wishes as well as the Sub Games both new and old are excluded (TGCO and MWW for the fact that there is no High score or best time, only a Percentage)
Warning: Due to this being a Complete List of ALL Games in KSSU Sploilers may be Mentioned. you have been warned...

yes, I didn't beat the arena or helper to hero yet.
Spring Breeze High Scores
1: 210850 (omegavoids)
2: 201390 (Stardart)
3:

Dyna Blade High Scores
1: 258650 (omegavoids)
2: 228880 (Stardart)
3:

Gourmet Race GP High Score
1: 217 (omegavoids)
2: 211 (Stardart)
3: 200 (omegavoids)

GR: Course 1 Best times
1: 22:35 (Stardart)
2: 25:92 (omegavoids)
3:

GR: Course 2 Best times
1:36.70 (omegavoids)
2: 37:29 (Stardart)
3:
GR: Course 3 Best times
1: 1:00:85 (omegavoids)
2: 1:02:09 (Stardart)
3:

Revenge of Meta Knight Best Times
1: 22625(omegavoids)
2: 22407 (Stardart)
3:

Revenge of the King Hi Score
1: 1029890 (omegavoids)
2: 1011810 (Stardart)
3:

Meta Knightmare Ultra Best Times
LV1
1: 3:26:65 (Stardart)
2: 4:22:75 (omegavoids)
3:

Lv2
1: 7:52:47 (Stardart)
2: 8:39:44 (omegavoids)
3:

Lv3
1: 5:34:45 (Stardart)
2: 6:56:02 (omegavoids)
3:

Lv4
1: 10:18:57 (Stardart)
2: 12:32:57 (omegavoids)
3:

Lv5
1: 16:22:95 (Stardart)
2: 19:15:89 (omegavoids)
3:

Total Time
1: 43:35:79 (Stardart)
2: 0:51:46:67 (omegavoids)
3:

The Arena Best times
1: 11:43:55 (Stardart)
2:
3:

Helper to Hero Best times
1: 6:21:90/Bonkers (Stardart)
2: 6:12:35/0_0 Bonkers (omegavoids)
3:

The TRUE Arena best times (Good luck)
1: 10:38:49 (Stardart)
2:
3:

yes, I didn't beat the arena or helper to hero yet.
Spring Breeze High Scores
1: 210850 (omegavoids)
2: 201390 (Stardart)
3:

Dyna Blade High Scores
1: 258650 (omegavoids)
2: 228880 (Stardart)
3:

Gourmet Race GP High Score
1: 200 (omegavoids)
2: 199 (Stardart)
3:

GR: Course 1 Best times
1: 22:35 (Stardart)
2: 25:92 (omegavoids)
3:

GR: Course 2 Best times
1:36.70 (omegavoids)
2: 37:29 (Stardart)
3:
GR: Course 3 Best times
1: 1:00:85 (omegavoids)
2: 1:02:09 (Stardart)
3:

Revenge of Meta Knight Best Times
1: 22625(omegavoids)
2: 22407 (Stardart)
3:

Revenge of the King Hi Score
1: 1029890 (omegavoids)
2: 1011810 (Stardart)
3:

Meta Knightmare Ultra Best Times
LV1
1: 3:26:65 (Stardart)
2: 6:00:55 (omegavoids)
3:

Lv2
1: 7:52:47 (Stardart)
2: 10:44:69 (omegavoids)
3:

Lv3
1: 5:34:45 (Stardart)
2: 9:45:07 (omegavoids)
3:

Lv4
1: 10:18:57 (Stardart)
2: 12:43:37 (omegavoids)
3:

Lv5
1: 16:22:95 (Stardart)
2: 22:11:55 (omegavoids)
3:

Total Time
1: 43:35:79 (Stardart)
2: 1:01:25:23 (omegavoids)
3:

The Arena Best times
1: 11:43:55 (Stardart)
2:
3:

Helper to Hero Best times
1: 6:21:90/Bonkers (Stardart)
2:
3:

The TRUE Arena best times (Good luck)
1: 10:38:49 (Stardart)
2:
3:

Gourmet Race GP High Score
1: 200 (omegavoids)
2: 199 (Stardart)
3:

By Freakin 1? DANG IT!

Edit: I Did the GP again and got 211. Also I've updated the list

I've got some better times at meta knightmare, and updated it.
EDIT: I got some more at gourmet race and finished the helper to hero, and updated.