World 3 is the fourth set of boards in the Toad Scramble mode of Mario Party: Star Rush. They are unlocked by completing a game on World 2. World 3 features a birthday cake theme.
Board information
| Board | Preview | Description | Boss battles |
|---|---|---|---|
| World 3-1 | 
|
"This three-layer cake is garnished with coins!" | 3 |
| World 3-2 | 
|
"On this tasty confection, Gold Bullet Bills abound!" | 4 |
| World 3-3 | 
|
"Tons of sweet toppings and tasty coins. Yum!" | 5 |