|First Appearance||Platform Racing 3 (2010)|
|Latest Appearance||Platform Racing 3|
The hat resembles a straw hat with three flowers and happy faces put around it, along with a feather. Before its name was revealed, this lead to the hat receiving the nickname "Spring Hat", which became more popular once it was announced to be added in late April.
When a user is holding the hat, all of their stats (minus EXP Bonus) are briefly increased by three.
The Happy Hat is available as a potential prize in the Level of the Day. Initially it was gettable in all levels, though this was changed to reduce the impact of sim courses. An early version of the hat was also accidentally given out to several users when the Halloween parts were released, though this was quickly corrected and the hat was removed from the players' inventory.