I did not know either before doing this game XD.
It's a Calotropis procera,
Calotropis procera is a species of flowering plant in the family Apocynaceae that is native to North Africa, Tropical Africa, Western Asia, South Asia, and Indochina. The green globes are hollow but the flesh contains a toxic milky sap that is extremely bitter and turns into a gluey coating resistant to soap.
source
Always learning! Thanks!