1. The game's font is designed after the Super Mario 64's font.
Mario 64:
Mario Pinball Land (Pay attention to text):
2. The shine collecting sound from Super Mario Sunshine is reused for when you check your score.
Mario Sunshine:
https://youtu.be/42Vp3a7IlaA?t=369
Mario Pinball:
https://youtu.be/NxqcoZVkTzg?t=566
3. Zingers from the Donkey Kong Country series can be found in the Grassy Greens stage.
DKC:
Mario Pinball:
https://youtu.be/TEShEpLZTcw?t=60
Mario 64:
Mario Pinball Land (Pay attention to text):
2. The shine collecting sound from Super Mario Sunshine is reused for when you check your score.
Mario Sunshine:
https://youtu.be/42Vp3a7IlaA?t=369
Mario Pinball:
https://youtu.be/NxqcoZVkTzg?t=566
3. Zingers from the Donkey Kong Country series can be found in the Grassy Greens stage.
DKC:
Mario Pinball:
https://youtu.be/TEShEpLZTcw?t=60