Top rated challenges
BETA MINI BOSS BATTLE: Vs. Cosmic White Thwomp (weakened)
Battle Arena 5 (beta) : Eliminate 1 opponent by yourself in 150cc, by losing at most 2 balloons, without touching any Thwomp nor Star Thwomp, with B. Rosalina, with 2 participants, in less than 2:00, by starting with 2 balloons, having CPUs starting with 14 balloons
Difficult BETA BOSS BATTLE: Vs. Cosmic White Thwomp
Battle Arena 5 (beta) : Eliminate 1 opponent by yourself in 150cc, without losing any balloons, without touching any Thwomp nor Star Thwomp, without falling, by taking at most 24 jumps, by taking at most 24 cannons, with Rosalina, with 2 participants, in less than 2:00, by starting with 1 balloon, having CPUs starting with 28 balloons
No teams
Impossible Fragile Karting
Acorn Heights → Mario Circuit : Finish in the 1st position in VS mode, in 150cc, without touching any tree, bus nor pipe, without being hit by any item
In difficult mode, with 8 participants, no teams
Difficult Blooper Beach : Collect 10 coins in Time Trial mode, in 150cc, with Dry Bones, in less than 1:09
Medium Chief Chilly's Ice Kingdom : Collect 10 coins in Time Trial mode, in 150cc, with Rosalina, in less than 1:39
Medium Sunrise Desert : Collect 10 coins in Time Trial mode, in 150cc, with Waluigi, in less than 1:19
Medium Haunted Pier : Collect 10 coins in Time Trial mode, in 150cc, with King Boo, in less than 1:39
Medium 100 Man Race
Mario Kart Ultimate : Finish 1st 1 time in a row in VS mode, in 150cc, with Mario, with 100 participants
In difficult mode, no teams
Difficult Shy Guy Crossing
Shy Guy Circuit : Dodge every Shy Guy wandering onto the road in Time Trial mode, in 150cc, without touching any Shy Guy, with Toad
Easy Shoehorned In
Shoe Cup : Get the gold cup in Grand Prix mode, in 150cc, without reverse drifting
In difficult mode
Medium Blast from the Past
Sky Squid Game : Destroy 5 Spike Bombs in 150cc, without falling, with Mario, in less than 3:00, in 1st place, by starting with 1 balloon
Extreme The 3 Pillars' Trial
Sky Squid Game : Reach all 3 holes at the center of each pillar in 150cc, without falling, in less than 32s
Extreme Lap Zap
Acorn Heights : Complete the track in less than 45s in VS mode, in 800cc, with 1 participant
Difficult To the Tree!
Maple Treeway : Collect all coins in Time Trial mode, in 150cc, without touching any Giant Wiggler, without falling
Difficult Sneaking through the Castle
Bowser Castle 2 : Complete a lap in VS mode, in 150cc, without touching any fire circle, box, Piranha Plant, fire snake, Thwomp, fire plant nor fire triplet, without falling, without touching the walls, in less than 40s
Medium Richy Victory
Choco Mountain → Toad's Factory : Collect all coins in Time Trial mode, in 150cc, in less than 1:10
Difficult Jungle Journey
DK's Jungle Parkway : Reach the glider ramp in VS mode, in 150cc, in less than 35s
Difficult Shroomless runner
TT - DS Delfino Square : Complete a lap in Time Trial mode, in 150cc, in less than 0:22:500, without touching any boxes
Impossible Autoroute du Soleil
Desert Drift : Complete the track in less than 1:00 in VS mode, in 999cc, without falling, with 1 participant, while constantly accelerating
Difficult Something went detrevni
something went wrong : Complete the track in less than 2:15 in Time Trial mode, in 150cc, with inverted shy guy, without touching the walls, without touching any error computer, with inverted controls
Extreme