Surprise Event! is a recurring Event in Kingdom Hearts Unchained χ / Union χ, which only appears for a single day.

Surprise Event! #1

 

The first Surprise Event! was available on February 2, 2020.

Surprise Event! #2

 

The second Surprise Event! was available on February 10, 2020.

Surprise Event! #3

 

The third Surprise Event! was available on February 18, 2020.

Surprise Event! #4

 

The fourth Surprise Event! was available on February 26, 2020.

Surprise Event! #5

 

The fifth Surprise Event! was available on March 5, 2020.